Vulnerability · Published Oct 6, 2025 · Assigned by Google
CVE-2025-59730Heap-buffer-overflow write in FFmpeg SANM decoding due to lack of bounds-checking in old_codec48
Medium 5.7
In plain English
A medium-severity out-of-bounds write in FFmpeg from FFmpeg. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
When decoding a frame for a SANM file (ANIM v0 variant), the decoded data can be larger than the buffer allocated for it. Frames encoded with codec 48 can specify their resolution (width x height). A buffer of appropriate size is allocated depending on the resolution. This codec can encode the frame contents using a run-length encoding algorithm. There are no checks that the decoded frame fits in the allocated buffer, leading to a heap-buffer-overflow. process_frame_obj initializes the buffers based on the frame resolution: We recommend upgrading to version 8.0 or beyond.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | ffmpeg | 8.0-r0 | ALPINE-CVE-2025-59730 |
| Alpine:v3.24 | ffmpeg | 8.0-r0 | ALPINE-CVE-2025-59730 |
| Debian:12 | ffmpeg | no fix listed | DEBIAN-CVE-2025-59730 |
| Debian:13 | ffmpeg | no fix listed | DEBIAN-CVE-2025-59730 |
| Debian:14 | ffmpeg | no fix listed | DEBIAN-CVE-2025-59730 |
Affected products (as reported)
Weakness: CWE-787 · Vector: CVSS:4.0/AV:A/AC:H/AT:P/PR:L/UI:P/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N