CVE-2026-125179 FFmpeg through 9.0.2 Heap Memory Disclosure via VQA Video Decoder

Medium 4.8 Published 9 Nov 2026 Updated 10 Nov 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-125179?

CVE-2026-125179 is a medium-severity vulnerability in FFmpeg, published on 9 Nov 2026.

Official description

FFmpeg through 9.0.2 contains an uninitialized memory vulnerability in the VQA video decoder in libavcodec/vqavideo.c that allows attackers to disclose heap memory via a crafted VQA file. Attackers can supply a Westwood VQA file omitting or truncating the CBF0/CBFZ codebook chunk, causing vqa_decode_frame() to render frames from leftover heap bytes visible in decoded output.

Weakness: CWE-908

Which versions are affected by CVE-2026-125179?

How do I fix CVE-2026-125179?

No fix has been published for CVE-2026-125179 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-125179 being exploited?

There is no known exploitation of CVE-2026-125179 in the wild and no public exploit code.

Sources

Also known as GHSA-52c6-49xr-528g, UBUNTU-CVE-2026-125179.