Local privilege escalation via improperly locked memory
Published Apr 8, 2025 · Updated Aug 10, 2026
Sensitive memory handling in Microsoft Windows 11 Update Stack allows local users to elevate privileges on affected builds. The stack stores sensitive data in memory without locking it correctly, leaving security-relevant contents accessible during local exploitation. A low-privileged local account and high-complexity conditions are required; successful exploitation grants elevated control over the system.
Summary
What happened
Sensitive memory handling in Microsoft Windows 11 Update Stack allows local users to elevate privileges on affected builds. The stack stores sensitive data in memory without locking it correctly, leaving security-relevant contents accessible during local exploitation. A low-privileged local account and high-complexity conditions are required; successful exploitation grants elevated control over the system.
The record
- CVE
- CVE-2025-27475
- Published
- Apr 8, 2025
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Windows 11, version 24H2
- Classifications
- CWE-591, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 8, 2025CVE publishedPublication date reported by the CVE source.
- Aug 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.26100.0 <10.0.26100.3775
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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