Exploited Zero-Day Vulnerability in Windows Ancillary Function Driver for WinSock
CVE-2026-68820 is an Important elevation of privilege vulnerability affecting the Windows Ancillary Function Driver for WinSock and has a CVSS score of 7.0. A use-after-free flaw (CWE-416) allows a low-privileged local attacker to elevate privileges with no user interaction. Exploitation requires winning a race condition when a locally authenticated attacker runs a specially crafted application to trigger the flaw. Successful exploitation could allow the attacker to gain SYSTEM privileges.
Microsoft reports that this vulnerability has been exploited in the wild.
Table 1. Exploited zero-day vulnerability in Windows Ancillary Function Driver for WinSock| Severity | CVSS Score | CVE | Description | Action Required? |
| Important | 7.0 | CVE-2026-68820 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Yes |
Publicly Disclosed Vulnerability in Windows User Profile Service
CVE-2026-62832 is an Important elevation of privilege vulnerability affecting the Windows User Profile Service and has a CVSS score of 7.8. A link following flaw (CWE-59) allows a low-privileged local attacker to elevate privileges with no user interaction and low attack complexity. An authenticated attacker with credentials for another local account could run a specially crafted application to load another user's registry hive, potentially gaining access to or modifying that user's data and elevating to administrator privileges.
While not confirmed at this time, CrowdStrike assesses this is likely the patch for the LegacyHive exploit released by the Nightmare-Eclipse persona in July 2026.
Table 2. Publicly disclosed vulnerability in Windows User Profile Service| Severity | CVSS Score | CVE | Description | Action Required? |
| Important | 7.8 | CVE-2026-62832 | Windows User Profile Service Elevation of Privilege Vulnerability | Yes |
Publicly Disclosed Vulnerability in Windows Kernel
CVE-2026-62737 is an Important elevation of privilege vulnerability affecting the Windows kernel and has a CVSS score of 7.8. An untrusted pointer dereference flaw (CWE-822) allows a low-privileged local attacker to elevate privileges with no user interaction and low attack complexity. Successful exploitation could allow an attacker to gain SYSTEM privileges.
While not officially recognized by Microsoft as publicly disclosed, a Chinese-language blog was published on August 9, 2026, describing a proof-of-concept exploit that can cause a system crash.
Table 3. Publicly disclosed vulnerability in Windows kernel| Severity | CVSS Score | CVE | Description | Action Required? |
| Important | 7.8 | CVE-2026-62737 | Windows Kernel Elevation of Privilege Vulnerability | Yes |
Publicly Disclosed Vulnerability in Windows Container Isolation FS Filter Driver
CVE-2026-72971 is an Important tampering vulnerability affecting the Windows Container Isolation FS Filter Driver (unionfs.sys) and has a CVSS score of 5.5. Windows Container Isolation FS Filter Driver is a component of the Windows container infrastructure that provides filesystem isolation for containerized workloads. It acts as a file system filter driver that intercepts and manages file system operations, ensuring containerized processes are restricted to their designated scope and isolated from the host operating system's file system and other containers.
A link following flaw (CWE-59) allows a low-privileged local attacker to tamper with system integrity with no user interaction and low attack complexity. Successful exploitation impacts only integrity, with no effect on confidentiality or availability.
This vulnerability was publicly disclosed, though there is no evidence of exploitation in the wild. Microsoft assesses exploitation as unlikely.
Table 4. Publicly disclosed vulnerability in Windows Container Isolation FS Filter Driver| Severity | CVSS Score | CVE | Description | Action Required? |
| Important | 5.5 | CVE-2026-72971 | Windows Container Isolation FS Filter Driver (unionfs.sys) Tampering Vulnerability | Yes |
Critical Vulnerability in Microsoft QUIC
CVE-2026-62815 is a Critical RCE vulnerability affecting Microsoft QUIC and has a CVSS score of 9.8. Microsoft QUIC (MsQuic) is Microsoft's open-source implementation of the QUIC transport protocol, which underpins HTTP/3 and is used across multiple Microsoft products and services for high-performance, encrypted network communication.
A use-after-free flaw (CWE-416) allows an unauthenticated remote attacker to execute code with no user interaction and low attack complexity. An attacker could exploit this vulnerability by sending a specially crafted packet to an affected service over the network.
Table 5. Critical vulnerability in Microsoft QUIC| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 9.8 | CVE-2026-62815 | Microsoft QUIC Remote Code Execution Vulnerability | Yes |
Critical Vulnerability in Windows Deployment Services
CVE-2026-62893 is a Critical RCE vulnerability affecting Windows Deployment Services and has a CVSS score of 9.8. A use-after-free flaw (CWE-416) allows an unauthenticated attacker to execute code over a network with low attack complexity. An attacker could exploit this by sending a specially crafted packet to the TFTP Server component of an affected service, with no authentication or user interaction required. Successful exploitation could allow the attacker to execute code on the target system.
Table 6. Critical vulnerability in Windows Deployment Services| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 9.8 | CVE-2026-62893 | Windows Deployment Services TFTP Server Remote Code Execution Vulnerability | Yes |
Critical Vulnerabilities in Windows DNS Server
CVE-2026-62878, CVE-2026-62817, CVE-2026-62820, and CVE-2026-65789 are Critical RCE vulnerabilities affecting Windows DNS Server and have CVSS scores of 9.8, 8.8, 8.1, and 8.1, respectively. All four can be exploited by sending specially crafted packets to an affected DNS server with no user interaction required.
CVE-2026-62878 stems from a stack-based buffer overflow flaw (CWE-121) and allows an unauthenticated remote attacker to execute code with low attack complexity. CVE-2026-62817 stems from an out-of-bounds write flaw (CWE-787) and is limited to adjacent network attackers, exploitable by calling arbitrary endpoints from within the network. CVE-2026-62820 stems from a race condition flaw (CWE-362) and requires an attacker to win a race condition. CVE-2026-65789 stems from a use-after-free flaw (CWE-416) and requires specific network configurations and timing conditions to exploit, meaning an attacker cannot reliably exploit the issue across all environments. It has only been observed in limited scenarios.
Table 7. Critical vulnerabilities in Windows DNS Server| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 9.8 | CVE-2026-62878 | Windows DNS Server Remote Code Execution Vulnerability | Yes |
| Critical | 8.8 | CVE-2026-62817 | Windows DNS Server Remote Code Execution Vulnerability | Yes |
| Critical | 8.1 | CVE-2026-62820 | Windows DNS Server Remote Code Execution Vulnerability | Yes |
| Critical | 8.1 | CVE-2026-65789 | Windows DNS Server Remote Code Execution Vulnerability | Yes |
Critical Vulnerability in Windows iSCSI Target Service
CVE-2026-65791 is a Critical RCE vulnerability affecting Windows iSCSI Target Service and has a CVSS score of 9.8. A heap-based buffer overflow flaw (CWE-122) allows an unauthenticated attacker to execute code over a network with low attack complexity. An attacker could exploit this by sending a specially crafted packet to an affected service, with no authentication or user interaction required, to execute code on the target system.
Table 8. Critical vulnerability in Windows iSCSI Target Service| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 9.8 | CVE-2026-65791 | Windows iSCSI Target Service Remote Code Execution Vulnerability | Yes |
Critical Vulnerability in Windows Reliable Multicast Transport Driver
CVE-2026-62816 is a Critical RCE vulnerability affecting the Windows Reliable Multicast Transport Driver (RMCAST) and has a CVSS score of 8.8. RMCAST is the Windows kernel driver that implements PGM (Pragmatic General Multicast), a reliable multicast protocol used for one-to-many data delivery across a network.
A heap-based buffer overflow flaw (CWE-122) allows an unauthenticated attacker to execute code with no user interaction and low attack complexity, though exploitation is limited to adjacent network attackers. An attacker could exploit this vulnerability by sending a specially crafted packet to an affected service.
Table 9. Critical vulnerability in Windows Reliable Multicast Transport Driver (RMCAST)| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.8 | CVE-2026-62816 | Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability | Yes |
Critical Vulnerability in Windows Active Directory Certificate Services
CVE-2026-62818 is a Critical RCE vulnerability affecting Windows Active Directory Certificate Services (AD CS) and has a CVSS score of 8.8. A use-after-free flaw (CWE-416) allows a low-privileged remote attacker to execute code with no user interaction and low attack complexity. An attacker could exploit this vulnerability by sending a specially crafted request to an affected AD CS service over the network.
Table 10. Critical vulnerability in Windows Active Directory Certificate Services| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.8 | CVE-2026-62818 | Windows Active Directory Certificate Services (AD CS) Remote Code Execution Vulnerability | Yes |
Critical Vulnerability in Windows DHCP Server
CVE-2026-62823 is a Critical RCE vulnerability affecting Windows DHCP Server and has a CVSS score of 8.8. A heap-based buffer overflow flaw (CWE-122) allows an unauthenticated attacker to execute code over an adjacent network with low attack complexity. An attacker could exploit this by sending a specially crafted packet to an affected DHCP service, with no authentication or user interaction required, to execute code on the target system.
Table 11. Critical vulnerability in Windows DHCP Server| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.8 | CVE-2026-62823 | Windows DHCP Server Remote Code Execution Vulnerability | Yes |
Critical Vulnerabilities in Windows GDI+
CVE-2026-62822 and CVE-2026-62890 are Critical vulnerabilities affecting Windows GDI+ and have CVSS scores of 8.8 and 7.8, respectively. CVE-2026-62822 stems from an integer overflow or wraparound flaw (CWE-190) and allows an unauthorized attacker to execute code over a network. It requires user interaction: An attacker would need to convince a user to open a specially crafted file to trigger remote code execution. CVE-2026-62890 stems from a heap-based buffer overflow flaw (CWE-122) and allows an authenticated attacker to elevate privileges locally with no user interaction required. Successful exploitation of CVE-2026-62890 could grant an attacker SYSTEM privileges.
Although both vulnerabilities affect the same component, they differ in threat type, attack vector, and privilege requirements, with one enabling network-based code execution through a malicious file and the other enabling local privilege escalation.
Table 12. Critical vulnerabilities in Windows GDI+| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.8 | CVE-2026-62822 | Windows GDI+ Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-62890 | Windows GDI+ Elevation of Privilege Vulnerability | Yes |
Critical Vulnerabilities in Microsoft SharePoint Server
CVE-2026-62827, CVE-2026-64921, and CVE-2026-65665 are Critical vulnerabilities affecting Microsoft SharePoint Server, all carrying a CVSS score of 8.8. CVE-2026-62827 stems from an improper authentication flaw (CWE-287), while CVE-2026-64921 stems from a missing authentication for critical function flaw (CWE-306). Both allow an authenticated attacker to elevate privileges over a network with low attack complexity. In each case, an authenticated attacker with access to the domain could perform RCE on the SharePoint server to elevate themselves to SharePoint admin.
CVE-2026-65665 stems from a deserialization of untrusted data flaw (CWE-502) and allows an authenticated attacker to execute code over a network with low attack complexity. In this case, an attacker authenticated as at least a site owner could write and inject arbitrary code to execute remotely on the SharePoint server. All three vulnerabilities require authenticated access to exploit, underscoring the importance of restricting and monitoring SharePoint permissions in addition to patching.
Table 13. Critical vulnerabilities in Microsoft SharePoint Server| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.8 | CVE-2026-62827 | Microsoft SharePoint Server Elevation of Privilege Vulnerability | Yes |
| Critical | 8.8 | CVE-2026-64921 | Microsoft SharePoint Server Elevation of Privilege Vulnerability | Yes |
| Critical | 8.8 | CVE-2026-65665 | Microsoft SharePoint Server Remote Code Execution Vulnerability | Yes |
Critical Vulnerability in Remote Desktop Client
CVE-2026-62824 is a Critical RCE vulnerability affecting Remote Desktop Client and has a CVSS score of 8.8. A stack-based buffer overflow flaw (CWE-121) allows an unauthenticated attacker to execute code over a network. It requires user interaction. An attacker could host a malicious server and convince a user to connect to it from an affected client; when the client processes the server's response, the attacker could execute code on the client system.
Table 14. Critical vulnerability in Remote Desktop Client| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.8 | CVE-2026-62824 | Remote Desktop Client Remote Code Execution Vulnerability | Yes |
Critical Vulnerabilities in Microsoft Office
CVE-2026-63515, CVE-2026-63532, CVE-2026-64898, CVE-2026-64903, CVE-2026-64909, CVE-2026-64910, CVE-2026-64911, CVE-2026-65657, and CVE-2026-70130 are Critical RCE vulnerabilities in Microsoft Office, with CVSS scores of 8.4 (CVE-2026-70130) and 7.8 (all others). These vulnerabilities allow unauthenticated attackers to execute arbitrary code locally through the following flaws:
- Heap-based Buffer Overflow (CWE-122): CVE-2026-64898, CVE-2026-70130
- Out-of-bounds Read (CWE-125): CVE-2026-63515
- Integer Overflow or Wraparound (CWE-190): CVE-2026-63532, CVE-2026-64903, CVE-2026-64911
- Integer Underflow (CWE-191): CVE-2026-64909
- Use After Free (CWE-416): CVE-2026-65657
- Untrusted Pointer Dereference (CWE-822): CVE-2026-64910
Exploitation requires an attacker to convince a user to open a specially crafted malicious Office file. Preview Pane is an attack vector for CVE-2026-63515, CVE-2026-63532, CVE-2026-64898, CVE-2026-64903, CVE-2026-64909, and CVE-2026-65657. Preview Pane is not an attack vector for CVE-2026-64910 and CVE-2026-64911. CVE-2026-70130 does not specify if Preview Pane is an attack vector.
Table 15. Critical vulnerabilities in Microsoft Office| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.4 | CVE-2026-70130 | Microsoft Office Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-63515 | Microsoft Office Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-63532 | Microsoft Office Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-64898 | Microsoft Office Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-64903 | Microsoft Office Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-64909 | Microsoft Office Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-64910 | Microsoft Office Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-64911 | Microsoft Office Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-65657 | Microsoft Office Remote Code Execution Vulnerability | Yes |
Critical Vulnerabilities in Windows Device Health Attestation
CVE-2026-66802 and CVE-2026-71331 are Critical RCE vulnerabilities affecting the Microsoft Azure Attestation service and Device Health Attestation (DHA) service. Both carry a CVSS score of 8.1.
CVE-2026-66802 stems from a race condition flaw (CWE-362) and requires the attacker to win a race condition to succeed. CVE-2026-71331 stems from an integer overflow or wraparound flaw (CWE-190) and instead requires the attacker to have deep knowledge of the target environment and configuration. Both vulnerabilities allow an unauthenticated attacker to execute code over a network with high attack complexity and no user interaction; in each case, an attacker could exploit the flaw by sending a specially crafted packet to an affected service to execute code on the target system.
Table 16. Critical vulnerabilities in Windows Device Health Attestation (DHA)| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.1 | CVE-2026-66802 | Windows Device Health Attestation (DHA) Remote Code Execution Vulnerability | Yes |
| Critical | 8.1 | CVE-2026-71331 | Windows Device Health Attestation (DHA) Remote Code Execution Vulnerability | Yes |
Critical Vulnerability in Windows Routing and Remote Access Service
CVE-2026-62819 is a Critical RCE vulnerability affecting Windows Routing and Remote Access Service (RRAS) and has a CVSS score of 8.1. RRAS is a Windows Server service that provides routing and remote access functionality, enabling organizations to deploy VPN, dial-up, and site-to-site connectivity solutions.
A use-after-free flaw (CWE-416) could allow an unauthenticated remote attacker to execute arbitrary code over a network. Successful exploitation requires an attacker to win a race condition. An attacker could exploit this vulnerability by sending a specially crafted packet to an affected service over the network, with no authentication or user interaction required.
Table 17. Critical vulnerability in Windows Routing and Remote Access Service (RRAS)| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.1 | CVE-2026-62819 | Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability | Yes |
Critical Vulnerability in Windows Secure Socket Tunneling Protocol
CVE-2026-62889 is a Critical RCE vulnerability affecting Windows Secure Socket Tunneling Protocol (SSTP) and has a CVSS score of 8.1. SSTP is a Microsoft VPN protocol that tunnels Point-to-Point Protocol (PPP) traffic through an SSL/TLS channel; it’s commonly used to provide secure remote access to corporate networks over HTTPS. A double free flaw (CWE-415) could allow an unauthenticated remote attacker to execute arbitrary code over a network. Successful exploitation requires an attacker to win a race condition. An attacker could exploit this vulnerability by sending a specially crafted packet to an affected service over the network, with no authentication or user interaction required.
Table 18. Critical vulnerability in Windows Secure Socket Tunneling Protocol (SSTP)| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.1 | CVE-2026-62889 | Windows Secure Socket Tunneling Protocol (SSTP) Remote Code Execution Vulnerability | Yes |
Critical Vulnerability in Windows Key Guard
CVE-2026-66799 is a Critical elevation of privilege vulnerability affecting Windows Key Guard and has a CVSS score of 7.8. A heap-based buffer overflow flaw (CWE-122) allows an authenticated attacker to elevate privileges locally with low attack complexity. Successful exploitation could allow an attacker to gain Virtual Trust Level 1 (VTL1) privileges, escalating beyond the access normally permitted to a standard local user.
Table 19. Critical vulnerability in Windows Key Guard| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 7.8 | CVE-2026-66799 | Windows Key Guard Elevation of Privilege Vulnerability | Yes |
Critical Vulnerabilities in Microsoft Office Graphics Component
CVE-2026-63513, CVE-2026-63519, CVE-2026-63526, CVE-2026-65664, and CVE-2026-66807 are Critical RCE vulnerabilities in the Microsoft Office Graphics Component, all with CVSS scores of 7.8. These vulnerabilities allow unauthenticated attackers to execute arbitrary code locally through the following flaws:
- Stack-based Buffer Overflow (CWE-121): CVE-2026-63526, CVE-2026-66807
- Heap-based Buffer Overflow (CWE-122): CVE-2026-63513, CVE-2026-63519, CVE-2026-65664
Exploitation requires an attacker to convince a user to open a specially crafted malicious Office file. Preview Pane is an attack vector for CVE-2026-63513, CVE-2026-63519, CVE-2026-63526, and CVE-2026-66807, but is not an attack vector for CVE-2026-65664.
Table 20. Critical vulnerabilities in Microsoft Office Graphics Component| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 7.8 | CVE-2026-63513 | Microsoft Office Graphics Component Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-63519 | Microsoft Office Graphics Component Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-63526 | Microsoft Office Graphics Component Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-65664 | Microsoft Office Graphics Component Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-66807 | Microsoft Office Graphics Component Remote Code Execution Vulnerability | Yes |
Critical Vulnerabilities in Microsoft Office Word
CVE-2026-63518, CVE-2026-63525, and CVE-2026-64907 are Critical RCE vulnerabilities in Microsoft Office Word, all with a CVSS score of 7.8. These vulnerabilities allow unauthenticated attackers to execute arbitrary code locally through the following flaws:
- Stack-based Buffer Overflow (CWE-121): CVE-2026-64907
- Heap-based Buffer Overflow (CWE-122): CVE-2026-63518
- Numeric Truncation Error (CWE-197): CVE-2026-63525
Exploitation requires an attacker to convince a user to open a specially crafted malicious Office file. Preview Pane is not an attack vector for any of these vulnerabilities.
Table 21. Critical vulnerabilities in Microsoft Office Word| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 7.8 | CVE-2026-63518 | Microsoft Office Word Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-63525 | Microsoft Office Word Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-64907 | Microsoft Office Word Remote Code Execution Vulnerability | Yes |
Critical Vulnerabilities in Microsoft Excel
CVE-2026-68794, CVE-2026-68804, and CVE-2026-68816 are Critical RCE vulnerabilities in Microsoft Excel, all with a CVSS score of 7.8. These vulnerabilities allow unauthenticated attackers to execute arbitrary code locally through the following flaws:
- Stack-based Buffer Overflow (CWE-121): CVE-2026-68816
- Heap-based Buffer Overflow (CWE-122): CVE-2026-68794
- Numeric Truncation Error (CWE-197): CVE-2026-68804
Exploitation requires an attacker to convince a user to open a specially crafted malicious Office file. Preview Pane is not an attack vector for any of these vulnerabilities.
Table 22. Critical vulnerabilities in Microsoft Excel| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 7.8 | CVE-2026-68794 | Microsoft Excel Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-68804 | Microsoft Excel Remote Code Execution Vulnerability | Yes |
| Critical | 7.8 | CVE-2026-68816 | Microsoft Excel Remote Code Execution Vulnerability | Yes |
Critical Vulnerability in Microsoft Exchange Server
CVE-2026-62911 is a Critical elevation of privilege vulnerability affecting Microsoft Exchange Server and has a CVSS score of 8.0. An authentication bypass by capture-replay flaw (CWE-294) could allow an authorized remote attacker to elevate their privileges over a network. An attacker who successfully exploited this vulnerability could take over the mailboxes of all Exchange users, send and read emails, and download attachments.
Table 23. Critical vulnerability in Microsoft Exchange Server| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.0 | CVE-2026-62911 | Microsoft Exchange Server Elevation of Privilege Vulnerability | Yes |
Critical Vulnerabilities in Microsoft Teams
CVE-2026-62896, CVE-2026-62918, and CVE-2026-65667 are Critical vulnerabilities affecting Microsoft Teams, with CVSS scores of 10.0 (CVE-2026-65667), 9.6 (CVE-2026-62896), and 7.5 (CVE-2026-62918). CVE-2026-65667 and CVE-2026-62896 are elevation of privilege vulnerabilities, while CVE-2026-62918 is a spoofing vulnerability. These vulnerabilities exploit the following flaws:
- Improper Authentication (CWE-287): CVE-2026-62896
- Improper Verification of Cryptographic Signature (CWE-347): CVE-2026-62918
- Missing Authorization (CWE-862): CVE-2026-65667
Table 24. Critical vulnerabilities in Microsoft Teams| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 10.0 | CVE-2026-65667 | Microsoft Teams Elevation of Privilege Vulnerability | No |
| Critical | 9.6 | CVE-2026-62896 | Microsoft Teams Elevation of Privilege Vulnerability | No |
| Critical | 7.5 | CVE-2026-62918 | Microsoft Teams Spoofing Vulnerability | No |
Critical Vulnerability in Microsoft Planetary Computer Pro
CVE-2026-63508 is a Critical elevation of privilege vulnerability affecting Microsoft Planetary Computer Pro and has a CVSS score of 10.0. Microsoft Planetary Computer Pro is a cloud-based geospatial analysis platform that provides access to large-scale environmental and earth observation datasets, primarily used by researchers and data scientists working with satellite imagery and climate data.
A missing authentication for a critical function flaw (CWE-306) allows an unauthenticated remote attacker to elevate privileges with no user interaction and low attack complexity. The vulnerability has a changed scope impact, affecting confidentiality and integrity but not availability.
Table 25. Critical vulnerability in Microsoft Planetary Computer Pro| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 10.0 | CVE-2026-63508 | Microsoft Planetary Computer Pro Elevation of Privilege Vulnerability | No |
Critical Vulnerabilities in Azure SQL Database
CVE-2026-56162 and CVE-2026-63522 are Critical elevation of privilege vulnerabilities affecting Azure SQL Database and have CVSS scores of 10.0 and 7.8, respectively. CVE-2026-56162 stems from an improper authentication flaw (CWE-287) and allows an unauthenticated remote attacker to elevate privileges over a network with no user interaction, low attack complexity, and a changed scope impact across confidentiality, integrity, and availability. CVE-2026-63522 stems from an incorrect permission assignment for a critical resource flaw (CWE-732) and allows a low-privileged local attacker to elevate privileges with no user interaction and low attack complexity. Successful exploitation of CVE-2026-63522 could allow an attacker to gain SQL sysadmin privileges.
Table 26. Critical vulnerabilities in Azure SQL Database| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 10.0 | CVE-2026-56162 | Azure SQL Database Elevation of Privilege Vulnerability | No |
| Critical | 7.8 | CVE-2026-63522 | Azure SQL Database Elevation of Privilege Vulnerability | No |
Critical Vulnerability in Azure Service Bus
CVE-2026-50515 is a Critical RCE vulnerability affecting Azure Service Bus and has a CVSS score of 9.9. Azure Service Bus is a fully managed enterprise message broker service used to decouple applications and services from one another, commonly used to pass data between applications via message queues and publish-subscribe topics in cloud and hybrid architectures.
A deserialization of untrusted data flaw (CWE-502) allows a low-privileged remote attacker to execute code over a network with no user interaction, low attack complexity, and a changed scope impact across confidentiality, integrity, and availability.
Table 27. Critical vulnerability in Azure Service Bus| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 9.9 | CVE-2026-50515 | Azure Service Bus Remote Code Execution Vulnerability | No |
Critical Vulnerability in Microsoft Entra Provisioning Service
CVE-2026-59115 is a Critical elevation of privilege vulnerability affecting the Microsoft Entra Provisioning Service (SyncFabric) and has a CVSS score of 9.9. The Microsoft Entra Provisioning Service is responsible for automating the synchronization of user identities and group memberships between Microsoft Entra ID (formerly Azure Active Directory) and connected applications and directories.
A path traversal flaw (CWE-35) allows a low-privileged remote attacker to elevate privileges over a network with no user interaction, low attack complexity, and a changed scope impact across confidentiality, integrity, and availability.
Table 28. Critical vulnerability in Microsoft Entra Provisioning Service| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 9.9 | CVE-2026-59115 | Microsoft Entra Provisioning Service Elevation of Privilege Vulnerability | No |
Critical Vulnerability in Azure Active Directory
CVE-2026-50481 is a Critical elevation of privilege vulnerability affecting Azure Active Directory and has a CVSS score of 9.9. A modification of assumed-immutable data flaw (CWE-471) allows a low-privileged remote attacker to elevate privileges over a network with no user interaction, low attack complexity, and a changed scope impact. Exploitation could allow an attacker to tamper with data that the system treats as trusted and unmodifiable, potentially enabling unauthorized privilege escalation within the identity platform.
Table 29. Critical vulnerability in Azure Active Directory| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 9.9 | CVE-2026-50481 | Azure Active Directory Elevation of Privilege Vulnerability | No |
Critical Vulnerability in Azure SRE Agent
CVE-2026-62830 is a Critical elevation of privilege vulnerability affecting Azure SRE Agent and has a CVSS score of 9.9. Azure SRE Agent is an AI-powered site reliability engineering service that autonomously monitors, diagnoses, and remediates issues in Azure-hosted applications and infrastructure.
A missing authorization flaw (CWE-862) allows a low-privileged remote attacker to elevate privileges over a network with no user interaction, low attack complexity, and a changed scope impact across confidentiality, integrity, and availability.
Table 30. Critical vulnerability in Azure SRE Agent| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 9.9 | CVE-2026-62830 | Azure SRE Agent Elevation of Privilege Vulnerability | No |
Critical Vulnerability in Microsoft 365 Admin Center
CVE-2026-62873 is a Critical elevation of privilege vulnerability affecting the Microsoft 365 Admin Center and has a CVSS score of 9.8. The Microsoft 365 Admin Center is the centralized web-based management portal used by organizational administrators to manage users, licenses, services, and security settings across the Microsoft 365 suite, making it a high-value target given the breadth of administrative access it provides.
An improper verification of cryptographic signature flaw (CWE-347) allows an unauthenticated remote attacker to elevate privileges over a network with no user interaction and low attack complexity, with full impact to confidentiality, integrity, and availability.
Table 31. Critical vulnerability in Microsoft 365 Admin Center| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 9.8 | CVE-2026-62873 | Microsoft 365 Admin Center Elevation of Privilege Vulnerability | No |
Critical Vulnerability in Microsoft SharePoint Online
CVE-2026-70332 is a Critical spoofing vulnerability affecting Microsoft SharePoint Online and has a CVSS score of 9.6. A cross-site scripting flaw (CWE-79) allows an unauthenticated attacker to perform spoofing over a network.
Table 32. Critical vulnerability in Microsoft SharePoint Online| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 9.6 | CVE-2026-70332 | Microsoft SharePoint Spoofing Vulnerability | No |
Critical Vulnerability in Azure Logic Apps
CVE-2026-56161 is a Critical information disclosure vulnerability affecting Azure Logic Apps and has a CVSS score of 9.6. An improper access control flaw (CWE-284) allows an authenticated attacker to disclose information over a network.
Azure Logic Apps is a cloud-based integration platform that lets organizations automate workflows and connect systems like SaaS applications, on-premises services, and databases with minimal custom code. Since these workflows often carry sensitive business data and credentials, an information disclosure flaw here could expose data flowing through an organization's connected systems.
Table 33. Critical vulnerability in Azure Logic Apps| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 9.6 | CVE-2026-56161 | Azure Logic Apps Information Disclosure Vulnerability | No |
Critical Vulnerability in Microsoft Azure Kubernetes Service
CVE-2026-50516 is a Critical elevation of privilege vulnerability affecting Microsoft Azure Kubernetes Service and has a CVSS score of 9.4. A missing authentication for critical function flaw (CWE-306) allows an unauthenticated attacker to elevate privileges over a network.
Table 34. Critical vulnerability in Microsoft Azure Kubernetes Service| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 9.4 | CVE-2026-50516 | Microsoft Azure Kubernetes Service Elevation of Privilege Vulnerability | No |
Critical Vulnerability in Copilot Cowork
CVE-2026-59118 is a Critical elevation of privilege vulnerability affecting Microsoft Copilot Cowork and has a CVSS score of 9.3. An improper authorization flaw (CWE-285) allows an unauthenticated attacker to elevate privileges over a network with low attack complexity, requiring user interaction. The vulnerability has a changed scope impact, affecting confidentiality and integrity but not availability.
Microsoft Copilot Cowork is an AI-powered collaboration agent within the Microsoft 365 Copilot ecosystem, designed to work alongside users on shared tasks and content across Microsoft 365 apps. Because Cowork operates with access to organizational content and collaborates directly within user workflows, an authorization flaw could allow an attacker to escalate privileges and improperly access or manipulate data across connected Microsoft 365 services.
Table 35. Critical vulnerability in Copilot Cowork| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 9.3 | CVE-2026-59118 | Copilot Cowork Elevation of Privilege Vulnerability | No |
Critical Vulnerability in Azure Confidential Ledger
CVE-2026-68823 is a Critical RCE vulnerability affecting Azure Confidential Ledger and has a CVSS score of 9.1. An exposed dangerous method or function flaw (CWE-749) allows an authenticated attacker to execute code over a network.
Azure Confidential Ledger is a tamper-proof, blockchain-based data store designed to maintain sensitive records with cryptographic integrity guarantees. Because organizations rely on it to preserve trust in critical audit and compliance data, a code execution flaw could undermine the integrity assurances the service is meant to provide.
Table 36. Critical vulnerability in Azure Confidential Ledger| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 9.1 | CVE-2026-68823 | Azure Confidential Ledger Remote Code Execution Vulnerability | No |
Critical Vulnerability in Microsoft Purview eDiscovery
CVE-2026-65668 is a Critical elevation of privilege vulnerability affecting Microsoft Purview eDiscovery and has a CVSS score of 8.8. An improper access control flaw (CWE-284) allows an authenticated attacker to elevate privileges over a network. This vulnerability has already been fully mitigated by Microsoft; no customer action is required.
Microsoft Purview eDiscovery is a compliance tool used to search, hold, and export content such as emails and documents across Microsoft 365 for legal investigations and regulatory requirements. Because eDiscovery grants access to potentially privileged and sensitive organizational data during legal proceedings, an access control flaw could let an attacker escalate privileges and gain unauthorized visibility into confidential case-related content.
Table 37. Critical vulnerability in Microsoft Purview eDiscovery| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.8 | CVE-2026-65668 | Microsoft Purview eDiscovery Elevation of Privilege Vulnerability | No |
Critical Vulnerability in Application Insights Profiler
CVE-2026-49163 is a Critical elevation of privilege vulnerability affecting Application Insights Profiler and has a CVSS score of 8.8. Application Insights Profiler is a performance monitoring tool within Microsoft's Azure Application Insights platform that automatically collects detailed profiling data from live applications, helping developers identify and diagnose performance bottlenecks and slow code paths in production environments.
A path traversal flaw (CWE-22) allows an authenticated attacker to elevate privileges over a network. This vulnerability has already been fully mitigated by Microsoft; no customer action is required.
Table 38. Critical vulnerability in Application Insights Profiler| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.8 | CVE-2026-49163 | Application Insights Profiler Elevation of Privilege Vulnerability | No |
Critical Vulnerability in Microsoft Entra ID
CVE-2026-62869 is a Critical spoofing vulnerability affecting Microsoft Entra ID and has a CVSS score of 8.8. An insufficient verification of data authenticity flaw (CWE-345) allows an authenticated attacker to perform spoofing over a network.
Microsoft Entra ID (formerly Azure Active Directory) is Microsoft's cloud-based identity and access management service, providing authentication, authorization, and single sign-on capabilities for users accessing Microsoft and third-party applications and resources.
Table 39. Critical vulnerability in Microsoft Entra ID| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.8 | CVE-2026-62869 | Microsoft Entra ID Spoofing Vulnerability | No |
Critical Vulnerability in Azure SQL Managed Instance
CVE-2026-62836 is a Critical elevation of privilege vulnerability affecting Azure SQL Managed Instance and has a CVSS score of 8.7. Azure SQL Managed Instance is a fully managed cloud database service that provides broad SQL Server engine compatibility while running on Azure infrastructure. An improper restriction of communication channel to intended endpoints flaw (CWE-923) could allow an unauthenticated remote attacker to elevate their privileges over a network.
Table 40. Critical vulnerability in Azure SQL Managed Instance| Severity | CVSS Score | CVE | Description | Action Required? |
| Critical | 8.7 | CVE-2026-62836 | Azure SQL Managed Instance Elevation of Privilege Vulnerability | No |
Patch Tuesday Dashboard in the Falcon Platform
For a visual overview of the systems impacted by this month’s vulnerabilities, you can use our Patch Tuesday dashboard. This can be found in the CrowdStrike Falcon® platform within the Exposure Management > Vulnerability Management > Dashboards page. The preset dashboards show the most recent three months of Patch Tuesday vulnerabilities.
Not All Relevant Vulnerabilities Have Patches: Consider Mitigation Strategies
As we have learned with other notable vulnerabilities, such as Log4j, not every highly exploitable vulnerability can be easily patched. As is the case for the ProxyNotShell vulnerabilities, it’s critically important to develop a response plan for how to defend your environments when no patching protocol exists.
Regular review of your patching strategy should still be a part of your program, but you should also look more holistically at your organization's methods for cybersecurity and improve your overall security posture.
The CrowdStrike Falcon platform regularly collects and analyzes trillions of endpoint events every day from millions of sensors deployed across 176 countries. Watch this demo to see the Falcon platform in action.
Learn More
Learn more about how CrowdStrike Falcon® Exposure Management can help you quickly and easily discover and prioritize vulnerabilities and other types of exposures here.
About CVSS Scores
The Common Vulnerability Scoring System (CVSS) is a free and open industry standard that CrowdStrike and many other cybersecurity organizations use to assess and communicate software vulnerabilities’ severity and characteristics. The CVSS Base Score ranges from 0.0 to 10.0, and the National Vulnerability Database (NVD) adds a severity rating for CVSS scores. Learn more about vulnerability scoring in this article.
Additional Resources
- For more information on which products are in Microsoft’s Extended Security Updates program, refer to the vendor guidance here.
- Learn how Falcon Exposure Management can help you discover and manage vulnerabilities and other exposures in your environments.
- Make prioritization painless and efficient. Watch how Falcon Exposure Management enables IT staff to improve visibility with custom filters and team dashboards.
- Test CrowdStrike next-gen antivirus for yourself with a free trial of CrowdStrike® Falcon Prevent™.
- Experience Fal.Con 2026 from anywhere with Fal.Con Digital, featuring keynote livestreams and on-demand access to 100+ sessions.