CVE-2026-81353 HEIF Image Extensions Remote Code Execution Vulnerability
A heap-based buffer overflow in the Windows HEIF Image Extension allows local attackers to execute arbitrary code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-81353?
CVE-2026-81353 is a high-severity memory corruption vulnerability in Microsoft HEIF Image Extension, published on 8 Sep 2026. It can only be exploited from the same machine or local network, 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 locally.
Weakness: CWE-122
Which versions are affected by CVE-2026-81353?
It affects 1 product.
Products include Microsoft Heif Image Extension.
How do I fix CVE-2026-81353?
No fix has been published for CVE-2026-81353 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-2026-81353 being exploited?
There is no known exploitation of CVE-2026-81353 in the wild and no public exploit code.
Other vulnerabilities in Microsoft HEIF Image Extension
Sources
Also known as GHSA-cpq5-3rf7-qrjm.