CVE-2026-125102

medium

Description

FFmpeg through 9.0.2 contains an uninitialized memory disclosure vulnerability in tak_decode_frame() in libavcodec/takdec.c that fails to verify multichannel decorrelation lists cover every channel. Attackers can supply crafted multichannel TAK files omitting channels from the list, causing undecoded sample buffers to leak heap memory through decoded audio.

References

https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-tak-decoder-uninitialized-memory-disclosure-via-takdec-c

https://github.com/FFmpeg/FFmpeg/commit/01e1bb126179879201429952cc2dcaea0d50d603

https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/takdec.c#L836

https://github.com/FFmpeg/FFmpeg

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-120256

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25703

Details

Source: Mitre, NVD

Published: 2026-11-09

Updated: 2026-11-10

Risk Information

CVSS v2

Base Score: 2.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N

Severity: Low

CVSS v3

Base Score: 3.3

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

Severity: Low

CVSS v4

Base Score: 4.8

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00134