CVE-2026-125104

medium

Description

FFmpeg through 9.0.2 contains a memory exhaustion vulnerability in ape_decode_frame() in libavcodec/apedec.c that fails to enforce the 73728-sample limit for legacy APE frames. Attackers can supply a crafted legacy Monkey's Audio file declaring an enormous nblocks value to force gigabyte-scale allocations and cause denial of service.

References

https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-memory-exhaustion-dos-via-ape-decoder-apedec-c

https://github.com/FFmpeg/FFmpeg/commit/968e9e948ed8c9ba90dbc875e60b843c755cf4ba

https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/apedec.c#L1601

https://github.com/FFmpeg/FFmpeg

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-120258

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25703

Details

Source: Mitre, NVD

Published: 2026-11-09

Updated: 2026-11-10

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

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

Severity: Medium

CVSS v4

Base Score: 6.8

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00165