CVE-2026-125188 FFmpeg through 9.0.2 ProRes prores_aw Heap Out-of-Bounds Read in Interlaced Encoding

Low 2.0 Published 9 Nov 2026 Updated 10 Nov 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-125188?

CVE-2026-125188 is a low-severity vulnerability in FFmpeg, published on 9 Nov 2026.

Official description

FFmpeg through 9.0.2 contains a heap out-of-bounds read vulnerability in libavcodec/proresenc_anatoliy.c that occurs when the prores_aw encoder processes interlaced, odd-height frames. Attackers can supply odd-height video that causes subimage_with_fill_template() to fill padding rows from memory before the fill_y buffer, leaking heap contents into the encoded output.

Weakness: CWE-127

Which versions are affected by CVE-2026-125188?

How do I fix CVE-2026-125188?

No fix has been published for CVE-2026-125188 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-125188 being exploited?

There is no known exploitation of CVE-2026-125188 in the wild and no public exploit code.

Sources

Also known as GHSA-j57g-62wm-j7w2, UBUNTU-CVE-2026-125188.