CVE-2025-26649: Windows Secure Channel Elevation of Privilege Vulnerability
This Microsoft advisory covers CVE-2025-26649 in Windows Server 2022, 23H2 Edition (Server Core installation) and Windows Server 2025 (Server Core installation).
- CVE-2025-26649
Key facts
- Vendor rating
- High, CVSS 7
- CISA KEV
- Not listed (catalogue checked )
- Affected
- Windows 11 version 22H2 10.0.22621.0 before 10.0.22621.5189; Windows 11 version 22H3 10.0.22631.0 before 10.0.22631.5189; Windows 11 Version 23H2 10.0.22631.0 before 10.0.22631.5189 and 5 more below
- Fixed in
- 10.0.22621.5189, 10.0.22631.5189, 10.0.26100.3775 and 2 more below
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Secure Channel allows an authorized attacker to elevate privileges locally.
Affected products named by the advisory: Windows Server 2022; Windows Server 2022, 23H2 Edition (Server Core installation); Windows Server 2025; Windows Server 2025 (Server Core installation).
Text from the source record.
- Windows 11 version 22H2 10.0.22621.0 before 10.0.22621.5189
- Windows 11 version 22H3 10.0.22631.0 before 10.0.22631.5189
- Windows 11 Version 23H2 10.0.22631.0 before 10.0.22631.5189
- Windows 11 Version 24H2 10.0.26100.0 before 10.0.26100.3775
- Windows Server 2022 10.0.20348.0 before 10.0.20348.3453
- Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 before 10.0.25398.1551
- Windows Server 2025 10.0.26100.0 before 10.0.26100.3775
- Windows Server 2025 (Server Core installation) 10.0.26100.0 before 10.0.26100.3775
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2025-26649
Upgrade to a fixed release named by Microsoft:
- 10.0.22621.5189
- 10.0.22631.5189
- 10.0.26100.3775
- 10.0.20348.3453
- 10.0.25398.1551
End-of-life dates for Windows Server
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