CVE-2026-52295

State: Published
Severity: 2.9 Low
Published: Sep 1, 2026
Updated: Sep 13, 2026
Reserved: Jun 8, 2026

Description

FFmpeg before 9.0 has an out-of-bounds read because the copied extradata lacked required padding before GetBitContext-based access in libavformat/iamf_writer.c.

Scores

CVSS	Score	Vector	Source
3.1	2.9 Low	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L	mitre
3.1	6.2 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-125 Out-of-bounds Read
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Affected Products

Product	Versions
FFmpegFFmpeg	before 9.0Affected

References

https://github.com/Kenan-Kamel/VulnerabilitiesReference/tree/main/FFmpeg/ExtradataPadding
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22988
https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/8439e0203744a30d280668fcd086f74ed5001da1

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