Local privilege escalation via improper input validation
Published Oct 14, 2025 · Updated Feb 22, 2026
Improper input validation in Microsoft Windows Authentication Methods allows local users to elevate privileges on affected systems. Microsoft identifies heap-based buffer overflow and out-of-bounds read weaknesses but has not disclosed the affected authentication routine or input. Low-privileged local access is required; successful exploitation grants elevated control over system confidentiality, integrity, and availability.
Summary
What happened
Improper input validation in Microsoft Windows Authentication Methods allows local users to elevate privileges on affected systems. Microsoft identifies heap-based buffer overflow and out-of-bounds read weaknesses but has not disclosed the affected authentication routine or input. Low-privileged local access is required; successful exploitation grants elevated control over system confidentiality, integrity, and availability.
The record
- CVE
- CVE-2025-59275
- Published
- Oct 14, 2025
- Updated
- Feb 22, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-125, CWE-1287, CWE-122, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 14, 2025CVE publishedPublication date reported by the CVE source.
- Feb 22, 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=10.0.10240.0 <10.0.10240.21161
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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