Critical MSRC-CVE-2026-81352 1 CVE

Web Media Extensions Remote Code Execution Vulnerability

Published Sep 8, 2026 · Updated Oct 14, 2026 · Revision 2

Vendor: Microsoft

Summary

Impact: Remote Code Execution. Microsoft rating: Critical. Not known to be exploited — Exploitation Unlikely. Customer action: Required.

Details

Security updates
1.2.42.0 — https://apps.microsoft.com/detail/9n5tdp8vcmhs?hl=en-US&gl=US

Vulnerabilities 1

High 8.8

CVE-2026-81352

Web Media Extensions Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.

Microsoft Web Media Extensions

Sep 8, 2026

Revision history

2026-10-14 #2
Updated product information in the Software Update table. This is an informational change only.
2026-09-08 #1
Information published.

References

CVE-2026-81352 Web Media Extensions Remote Code Execution Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-81352
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss