Local privilege escalation via out-of-bounds read
Published Mar 10, 2026 · Updated Mar 10, 2026
Out-of-bounds read in Microsoft Windows Extensible File Allocation allows local users to elevate privileges on affected Windows systems. Microsoft identifies the affected component and memory-safety error but has not disclosed the input, code path, or operation that reads beyond its intended boundary. Exploitation requires prior low-privilege local access and can provide elevated access to protected system resources.
Summary
What happened
Out-of-bounds read in Microsoft Windows Extensible File Allocation allows local users to elevate privileges on affected Windows systems. Microsoft identifies the affected component and memory-safety error but has not disclosed the input, code path, or operation that reads beyond its intended boundary. Exploitation requires prior low-privilege local access and can provide elevated access to protected system resources.
The record
- CVE
- CVE-2026-25174
- Published
- Mar 10, 2026
- Updated
- Mar 10, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-125, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 10, 2026CVE publishedPublication date reported by the CVE source.
- Mar 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=10.0.17763.0 <10.0.17763.8511
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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