CVE-2026-125241 FFmpeg through 9.0.2 Heap Buffer Overflow via FLIC Decoder check_pixel_ptr

High 7.3 Published 9 Nov 2026 Updated 9 Nov 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-125241?

CVE-2026-125241 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 libavcodec/flicvideo.c that allows attackers to write out of bounds because check_pixel_ptr() checks only one bound with negative-stride frames. Attackers can supply a crafted FLIC file whose RLE and delta chunks write pixel data past frame storage, corrupting heap memory to crash applications or possibly execute code.

Weakness: CWE-787

Which versions are affected by CVE-2026-125241?

How do I fix CVE-2026-125241?

No fix has been published for CVE-2026-125241 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-125241 being exploited?

There is no known exploitation of CVE-2026-125241 in the wild and no public exploit code.

Sources

Also known as GHSA-cvrp-p38c-35rp, UBUNTU-CVE-2026-125241.