Local privilege escalation via heap buffer overflow
Published Jul 14, 2026 · Updated Jul 14, 2026
Heap-based buffer overflow in Windows Media on affected Windows 11 releases allows local users to elevate privileges. Microsoft has not published the affected file or function, the input that reaches it, or the operation that writes beyond a heap allocation. Exploitation requires local low-privilege access and grants privileges beyond the user's existing authorization.
Summary
What happened
Heap-based buffer overflow in Windows Media on affected Windows 11 releases allows local users to elevate privileges. Microsoft has not published the affected file or function, the input that reaches it, or the operation that writes beyond a heap allocation. Exploitation requires local low-privilege access and grants privileges beyond the user's existing authorization.
The record
- CVE
- CVE-2026-50336
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows 11, version 25H2
- Classifications
- CWE-122, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 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=10.0.26200.0 <10.0.26200.8875
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.
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Technologies
Your stack
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Your stack
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