CVE-2026-125242

MEDIUM 4.7

FFmpeg through 9.0.2 Memory Leak via VDPAU Hwaccel Bitstream Buffer Table

CVSS Score

4.7

EPSS Score

0.0%

EPSS Percentile

0th

FFmpeg through 9.0.2 contains a memory leak vulnerability in libavcodec/vdpau.c that allows attackers to exhaust heap memory by aborting pictures before end_frame. Attackers can supply crafted H.264 streams with malformed NAL units that repeatedly abandon pictures, leaking the bitstream_buffers table continuously and causing denial of service.

CWE	CWE-401
Vendor	ffmpeg
Product	ffmpeg
Published	Nov 9, 2026
Last Updated	Nov 9, 2026

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CVSS v3 Breakdown

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

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

FFmpeg / FFmpeg

0 ≤ 9.0.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

code.ffmpeg.org: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25231 github.com: https://github.com/FFmpeg/FFmpeg/commit/2c6cd8098844f2367f8ba0a3a483e405c8f76449 github.com: https://github.com/FFmpeg/FFmpeg/commit/eac2bedcf6245552b39eed32b334851bc6a1b8fa github.com: https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/vdpau.c#L378 github.com: https://github.com/FFmpeg/FFmpeg vulncheck.com: https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-memory-leak-via-vdpau-hwaccel-bitstream-buffer-table

Credits

Joshua Rogers (AISLE Research) Michael Niedermayer