Remote code execution via heap buffer overflow
Published Sep 8, 2026 · Updated Sep 9, 2026
Heap-based buffer overflow in Microsoft Windows Media Foundation allows remote attackers to execute code over a network. Microsoft identifies the fault class and component but has not disclosed the parsing locus or incorrect memory operation applied to untrusted input. No prior privileges are required, but exploitation requires user interaction and runs code with the targeted user's privileges.
Summary
What happened
Heap-based buffer overflow in Microsoft Windows Media Foundation allows remote attackers to execute code over a network. Microsoft identifies the fault class and component but has not disclosed the parsing locus or incorrect memory operation applied to untrusted input. No prior privileges are required, but exploitation requires user interaction and runs code with the targeted user's privileges.
The record
- CVE
- CVE-2026-69511
- Published
- Sep 8, 2026
- Updated
- Sep 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-122, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 9, 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 <10.0.17763.9245
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.
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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