CVE-2026-125171
FFmpeg through 9.0.2 Out-of-Bounds Read in Musepack SV7 Decoder via mpc7.c
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
FFmpeg through 9.0.2 contains an out-of-bounds read vulnerability in the Musepack SV7 decoder because mpc7_decode_init() does not validate lastframelen against MPC_FRAME_SIZE. Attackers can supply a crafted Musepack SV7 file declaring an oversized final frame, causing consumers of decoded frames to read past the audio buffer, leading to crashes or heap memory disclosure.
| CWE | CWE-125 |
| Vendor | ffmpeg |
| Product | ffmpeg |
| Published | Nov 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Affected Versions
FFmpeg / FFmpeg
0 ≤ 9.0.2
References
code.ffmpeg.org: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25074 github.com: https://github.com/FFmpeg/FFmpeg/commit/5d59b7c45d7142bddd13ddc8891e72c5c7dc991b github.com: https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/mpc7.c#L281 github.com: https://github.com/FFmpeg/FFmpeg vulncheck.com: https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-out-of-bounds-read-in-musepack-sv7-decoder-via-mpc7-c
Credits
zhang xingxing 🔍 Joshua Rogers (AISLE Research) zhang xingxing