CVE-2026-81352 Web Media Extensions Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Codecs Library allows remote attackers to execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-81352?
CVE-2026-81352 is a high-severity memory corruption vulnerability in Microsoft Web Media Extensions, published on 8 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Heap-based buffer overflow in Microsoft Windows Codecs Library allows an unauthorized attacker to execute code over a network.
Weakness: CWE-122
Which versions are affected by CVE-2026-81352?
It affects 1 product.
Products include Microsoft Web Media Extensions.
How do I fix CVE-2026-81352?
No fix has been published for CVE-2026-81352 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-81352 being exploited?
There is no known exploitation of CVE-2026-81352 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Web Media Extensions
Sources
Also known as GHSA-hjjj-2c64-x435.