Remote code execution via heap buffer overflow
Published May 13, 2025 · Updated Feb 26, 2026
Heap-based buffer overflow in Windows Media on affected Windows releases allows remote attackers to execute code via network content. Microsoft identifies a heap overwrite in Windows Media but does not disclose the parser, file format, or malformed field causing the out-of-bounds write. Exploitation is unauthenticated but requires a user to open attacker-controlled content; successful code execution runs in that user's security context.
Summary
What happened
Heap-based buffer overflow in Windows Media on affected Windows releases allows remote attackers to execute code via network content. Microsoft identifies a heap overwrite in Windows Media but does not disclose the parser, file format, or malformed field causing the out-of-bounds write. Exploitation is unauthenticated but requires a user to open attacker-controlled content; successful code execution runs in that user's security context.
The record
- CVE
- CVE-2025-29962
- Published
- May 13, 2025
- Updated
- Feb 26, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-122, T1204
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 13, 2025CVE publishedPublication date reported by the CVE source.
- Feb 26, 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 <10.0.10240.21014
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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