Local privilege escalation via out-of-bounds driver read
Published Apr 8, 2025 · Updated Aug 10, 2026
Out-of-bounds read in Microsoft Windows Kernel-Mode Drivers before 10.0.26100.3775 allows local users to elevate privileges. Microsoft has not identified the affected driver or disclosed which buffer read exceeds its valid boundary. An attacker must first obtain local low-privileged access; successful exploitation grants SYSTEM privileges without user interaction.
Summary
What happened
Out-of-bounds read in Microsoft Windows Kernel-Mode Drivers before 10.0.26100.3775 allows local users to elevate privileges. Microsoft has not identified the affected driver or disclosed which buffer read exceeds its valid boundary. An attacker must first obtain local low-privileged access; successful exploitation grants SYSTEM privileges without user interaction.
The record
- CVE
- CVE-2025-27728
- Published
- Apr 8, 2025
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2025 (Server Core installation)
- Classifications
- CWE-125, 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.
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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