CVE-2026-125207
Discovered by AISLEPUBLISHEDCWE-789
Description
FFmpeg through 9.0.2 contains an uncontrolled memory allocation vulnerability in the Interplay ACM decoder that allows attackers to exhaust memory via an attacker-controlled block size. Attackers can supply a crafted ACM file with maximum level and row count in extradata, making decode_init() allocate nearly a gigabyte and deny service.
CVSS Base Scores
CVSS v4.06.8
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
CVSS v3.1
5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Version | Status |
|---|---|---|---|
| FFmpeg | FFmpeg | 0 | affected |
Credits
- Joshua Rogers (AISLE Research)(finder)
- Michael Niedermayer(remediation developer)
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25703
- https://github.com/FFmpeg/FFmpeg/commit/6ecaddb9c1d59cf7f5de16017122fecb2fa0c67c
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/interplayacm.c#L101
- https://github.com/FFmpeg/FFmpeg
- https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-excessive-memory-allocation-via-interplay-acm-decoder