---
id: CVE-2026-125102
title: FFmpeg through 9.0.2 TAK Decoder Uninitialized Memory Disclosure via takdec.c
summary: >-
  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
  multichan…
severity: low
cvss: 3.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-908
vendor: FFmpeg
product: FFmpeg
affected:
  - FFmpeg <= 9.0.2
published: '2026-11-09'
updated: '2026-11-09'
sourceUpdated: '2026-11-09T19:10:56.995Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-125102'
references:
  - url: 'https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25703'
  - url: >-
      https://github.com/FFmpeg/FFmpeg/commit/01e1bb126179879201429952cc2dcaea0d50d603
    label: Patch Commit
  - url: 'https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/takdec.c#L836'
  - url: 'https://github.com/FFmpeg/FFmpeg'
  - url: >-
      https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-tak-decoder-uninitialized-memory-disclosure-via-takdec-c
    label: >-
      VulnCheck Advisory: FFmpeg through 9.0.2 TAK Decoder Uninitialized Memory
      Disclosure via takdec.c
tags:
  - cve.org
ingestedAt: '2026-11-09T19:18:02.631Z'
---

## Overview

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.

## Affected

- `FFmpeg <= 9.0.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.