Vulnerability in Ffmpeg
CVE-2026-125102
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.
Published .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25703 (issue-tracking)
- github.com/FFmpeg/FFmpeg (product)
- github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/takdec.c (technical-description)
- github.com/FFmpeg/FFmpeg/commit/01e1bb126179879201429952cc2dcaea0d50d603 (patch)
- www.vulncheck.com/advisories/ffmpeg-through-9.0.2-tak-decoder-uninitialized-mem… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-125102?
- CVE-2026-125102 is a low-severity vulnerability in Ffmpeg, classified under Use of Uninitialized Resource. CVSS score: 3.3/10. Published 2026-11-09.
- How severe is CVE-2026-125102?
- Low severity. CVSS v3 base score is 3.3 out of 10.