CVE tracker / CVE-2025-26649
CVE-2025-26649
CVE-2025-26649 is the Windows Secure Channel Elevation of Privilege Vulnerability. Microsoft rates it Important, CVSS 7.0. It is not in CISA's Known Exploited Vulnerabilities catalog. Published April 8, 2025.
Risk summary
Microsoft describes it: “Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Secure Channel allows an authorized attacker to elevate privileges locally.”
How to fix it
Microsoft lists 11 affected products and the update that fixes each:
- KB5055523 · fixed build 10.0.26100.3775
Windows Server 2025, Windows 11 Version 24H2 for x64-based Systems, Windows 11 Version 24H2 for ARM64-based Systems, Windows Server 2025 (Server Core installation) - KB5055526 · fixed build 10.0.20348.3453
Windows Server 2022 (Server Core installation), Windows Server 2022 - KB5055527 · fixed build 10.0.25398.1551
Windows Server 2022, 23H2 Edition (Server Core installation) - KB5055528 · fixed build 10.0.22631.5189, 10.0.22621.5189
Windows 11 Version 23H2 for x64-based Systems, Windows 11 Version 23H2 for ARM64-based Systems, Windows 11 Version 22H2 for x64-based Systems, Windows 11 Version 22H2 for ARM64-based Systems
What Microsoft changed
- April 8, 2025: Information published.
Details
- Weakness
- CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
- Publicly disclosed (Microsoft)
- No
- Exploited (Microsoft)
- No
- Known exploited (CISA KEV)
- Not listed
- Published
- April 8, 2025
- Last revised
- April 8, 2025
Get told when this changes
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References
From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.