CVE-2026-125196 FFmpeg through 9.0.2 Heap Buffer Overflow via liboapv APV Encoder Wrapper

High 7.3 Published 9 Nov 2026 Updated 10 Nov 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-125196?

CVE-2026-125196 is a high-severity vulnerability in FFmpeg, published on 9 Nov 2026.

Official description

FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in liboapve_encode() in libavcodec/liboapvenc.c that allows attackers to corrupt heap memory by supplying frames larger than the configured encoder dimensions. Attackers can craft videos whose resolution changes mid-stream so that transcoding to APV without rescaling writes attacker-controlled pixel data past the imgb plane buffers.

Weakness: CWE-122

Which versions are affected by CVE-2026-125196?

How do I fix CVE-2026-125196?

No fix has been published for CVE-2026-125196 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-125196 being exploited?

There is no known exploitation of CVE-2026-125196 in the wild and no public exploit code.

Sources

Also known as GHSA-7hrw-2r6j-2p3m, UBUNTU-CVE-2026-125196.