Local privilege escalation via NTFS out-of-bounds read
Published Apr 8, 2025 · Updated Aug 10, 2026
Out-of-bounds read in Windows NTFS allows local users to elevate privileges through local interaction with crafted file-system data. Microsoft identifies NTFS as the affected component but has not published the specific parser, structure, or unchecked read operation. Exploitation requires user interaction on an affected Windows host and can grant elevated privileges with resulting control over protected data and services.
Summary
What happened
Out-of-bounds read in Windows NTFS allows local users to elevate privileges through local interaction with crafted file-system data. Microsoft identifies NTFS as the affected component but has not published the specific parser, structure, or unchecked read operation. Exploitation requires user interaction on an affected Windows host and can grant elevated privileges with resulting control over protected data and services.
The record
- CVE
- CVE-2025-27733
- 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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