CVE tracker / CVE-2025-27475
CVE-2025-27475
CVE-2025-27475 is the Windows Update Stack 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: “Sensitive data storage in improperly locked memory in Windows Update Stack allows an authorized attacker to elevate privileges locally.”
How to fix it
Microsoft lists 6 affected products and the update that fixes each:
- KB5055523 · fixed build 10.0.26100.3775
Windows 11 Version 24H2 for x64-based Systems, Windows 11 Version 24H2 for ARM64-based Systems - 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-591: Sensitive Data Storage in Improperly Locked Memory
- 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.