CVE-2026-125251

HighCVSS 7.0/10Last modified Nov 10, 2026

Description

FFmpeg through 9.0.2 contains an integer overflow vulnerability in the VVC decoder alloc_frame() function in libavcodec/vvc/refs.c that undersizes the reference picture list allocation on 32-bit builds. Attackers can supply a crafted VVC (H.266) file with a very large number of NAL units per access unit to trigger heap out-of-bounds writes and corrupt memory.

Metrics

CVSS 3.1 7.0/10CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-190

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
FFmpeg	FFmpeg	<= 9.0.2

References

Timeline

Published: Nov 9, 2026
Last modified: Nov 10, 2026
NVD status: Undergoing Analysis

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