CVE-2026-125217
FFmpeg through 9.0.2 RoQ DPCM Encoder Uninitialized Heap Memory Disclosure
CVSS Score
3.3
EPSS Score
0.0%
EPSS Percentile
0th
FFmpeg through 9.0.2 contains an uninitialized memory use vulnerability in roq_dpcm_encode_frame() in libavcodec/roqaudioenc.c that encodes stale heap contents when flushed early. Attackers can supply short audio streams under eight frames for RoQ DPCM transcoding, causing DPCM-quantized uninitialized heap data from frame_buffer to leak into output packets.
| CWE | CWE-908 |
| 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:N Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
FFmpeg / FFmpeg
0 ≤ 9.0.2
References
code.ffmpeg.org: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25694 github.com: https://github.com/FFmpeg/FFmpeg/commit/f71410e0288f0c40ae2fb5e5a4d7428763d08a71 github.com: https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/roqaudioenc.c#L156 github.com: https://github.com/FFmpeg/FFmpeg vulncheck.com: https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-roq-dpcm-encoder-uninitialized-heap-memory-disclosure
Credits
Joshua Rogers (AISLE Research) Michael Niedermayer