CVE-2026-125073

MediumCVSS 5.5/10Last modified Nov 10, 2026

Description

FFmpeg through 9.0.2 contains an infinite loop vulnerability in bit_allocation() in libavcodec/imc.c that allows attackers to hang decoding by supplying audio blocks with a negative bit budget. Attackers can craft IMC or IAC audio files that drive freebits negative, causing the reduction loop to never terminate and consuming 100% CPU.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-835

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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