Local privilege escalation via NTFS out-of-bounds read
Published Apr 8, 2025 · Updated Aug 10, 2026
Out-of-bounds read in Windows NTFS across affected Windows 10 and Windows Server builds allows local users to elevate privileges. Microsoft has not disclosed which NTFS parsing locus performs the out-of-bounds read or how crafted input reaches it. Exploitation requires local access and user interaction; success grants elevated privileges with confidentiality, integrity, and availability consequences.
Summary
What happened
Out-of-bounds read in Windows NTFS across affected Windows 10 and Windows Server builds allows local users to elevate privileges. Microsoft has not disclosed which NTFS parsing locus performs the out-of-bounds read or how crafted input reaches it. Exploitation requires local access and user interaction; success grants elevated privileges with confidentiality, integrity, and availability consequences.
The record
- CVE
- CVE-2025-27483
- Published
- Apr 8, 2025
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-125, T1068
- Attack vector
- local
- Privileges
- unauthenticated
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=10.0.10240.0 <10.0.10240.20978
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.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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