CVE-2026-125260 FFmpeg through 9.0.2 Heap Buffer Overflow in EXR Encoder RLE Path

High 7.3 Published 9 Nov 2026 Updated 10 Nov 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-125260?

CVE-2026-125260 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/exrenc.c that allows attackers to corrupt heap memory when encode_scanline_rle() processes frames taller than the encoder height. Attackers can supply crafted input whose resolution grows mid-stream, transcoded to OpenEXR with RLE compression, to write pointers past the scanline array and crash the application.

Weakness: CWE-122

Which versions are affected by CVE-2026-125260?

How do I fix CVE-2026-125260?

No fix has been published for CVE-2026-125260 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-125260 being exploited?

There is no known exploitation of CVE-2026-125260 in the wild and no public exploit code.

Sources

Also known as GHSA-v7mh-fwjx-mgh7, UBUNTU-CVE-2026-125260.