Integer Overflow Vulnerability in FFmpeg by FFmpeg
CVE-2026-125247

4.8MEDIUM

Key Information:

Vendor

Ffmpeg

Status
Ffmpeg
Vendor
CVE Published:
9 November 2026

What is CVE-2026-125247?

FFmpeg versions up to 9.0.2 are susceptible to an integer overflow vulnerability in the dng_decode_tiles() function. This flaw allows attackers to manipulate TileWidth or TileLength parameters to values close to INT_MAX, causing the tile processing loop to bypass execution. As a result, this can leak uninitialized or outdated memory data from the heap, potentially exposing sensitive information.

Affected Version(s)

FFmpeg 0 <= 9.0.2

References

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24999
issue-tracking
https://github.com/FFmpeg/FFmpeg/commit/a9c070e52fecb7fb2...
patch
https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/t...
technical-description

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

OSS-Fuzz
Joshua Rogers (AISLE Research)
Michael Niedermayer
.