CVE-2026-125177
Discovered by AISLEPUBLISHEDCWE-908
Description
FFmpeg through 9.0.2 contains an information disclosure vulnerability in the MSCC/SRGC decoder in libavcodec/mscc.c that outputs uninitialized heap bytes when RLE data ends early. Attackers can craft an MSCC or SRGC stream, such as in AVI, whose RLE data terminates early so the decoded frame exposes leftover heap memory to viewers of the output.
CVSS Base Scores
CVSS v4.04.8
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS v3.1
3.3CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Affected Products
| Vendor | Product | Version | Status |
|---|---|---|---|
| FFmpeg | FFmpeg | 0 | affected |
Credits
- Umar Pathan (Umar0x)(finder)
- Joshua Rogers (AISLE Research)(reporter)
- Umar Pathan(remediation developer)
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24465
- https://github.com/FFmpeg/FFmpeg/commit/263a85e2a2127396f8a2b0c329ec798e1ea015ad
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/mscc.c#L236
- https://github.com/FFmpeg/FFmpeg
- https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-uninitialized-heap-memory-disclosure-via-mscc-srgc-decoder