Local privilege escalation via kernel stack overflow
Published Apr 14, 2026 · Updated Apr 14, 2026
Stack-based buffer overflow in the Windows Kernel in Microsoft Windows 11 version 26H1 allows local users to elevate privileges. Microsoft identifies the kernel and overflow class but has not published the affected routine, input path, or specific unchecked operation that overruns the stack. Exploitation requires existing low-privilege local access and a high-complexity condition; success grants kernel-level control.
Summary
What happened
Stack-based buffer overflow in the Windows Kernel in Microsoft Windows 11 version 26H1 allows local users to elevate privileges. Microsoft identifies the kernel and overflow class but has not published the affected routine, input path, or specific unchecked operation that overruns the stack. Exploitation requires existing low-privilege local access and a high-complexity condition; success grants kernel-level control.
The record
- CVE
- CVE-2026-32195
- Published
- Apr 14, 2026
- Updated
- Apr 14, 2026
- Vendor
- Microsoft
- Product
- Windows 11, version 26H1
- Classifications
- CWE-121, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 14, 2026CVE publishedPublication date reported by the CVE source.
- Apr 14, 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=10.0.28000.0 <10.0.28000.1836
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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