Vulnerability · Published Oct 6, 2025 · Assigned by Google
CVE-2025-59731Heap-buffer-overflow write in FFmpeg EXR dwa_uncompress
Medium 6.9
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 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
When decoding an OpenEXR file that uses DWAA or DWAB compression, the specified raw length of run-length-encoded data is not checked when using it to calculate the output data. We read rle_raw_size from the input file at [0], we decompress and decode into the buffer td->rle_raw_data of size rle_raw_size at [1], and then at [2] we will access entries in this buffer up to (td->xsize - 1) * (td->ysize - 1) + rle_raw_size / 2, which may exceed rle_raw_size. 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-2025-59731 |
| Alpine:v3.24 | ffmpeg | 8.0-r0 | ALPINE-CVE-2025-59731 |
| Debian:12 | ffmpeg | 7:5.1.7-0+deb12u1 | DEBIAN-CVE-2025-59731 |
| Debian:12 | ffmpeg | 7:5.1.7-0+deb12u1 | DSA-5985-1 |
| Debian:13 | ffmpeg | 7:7.1.2-0+deb13u1 | DSA-6007-1 |
| Debian:13 | ffmpeg | 7:7.1.2-0+deb13u1 | DEBIAN-CVE-2025-59731 |
| Debian:14 | ffmpeg | 7:7.1.2-1 | DEBIAN-CVE-2025-59731 |
| Ubuntu:25.10 | ffmpeg | 7:7.1.1-1ubuntu4.2 | UBUNTU-CVE-2025-59731 |
Affected products (as reported)
Weakness: CWE-787 · Vector: CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N