CVE-2026-125188 json
FFmpeg through 9.0.2 ProRes prores_aw Heap Out-of-Bounds Read in Interlaced Encoding
published 2d ago modified yesterday also EUVD-2026-120277
- cvss
- 2.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 1%
- public exploits
- 0
- none known
Summary
FFmpeg through 9.0.2 contains a heap out-of-bounds read vulnerability in libavcodec/proresenc_anatoliy.c that occurs when the prores_aw encoder processes interlaced, odd-height frames. Attackers can supply odd-height video that causes subimage_with_fill_template() to fill padding rows from memory before the fill_y buffer, leaking heap contents into the encoded output.
Patch / fix
Is CVE-2026-125188 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- yesterday
Exploit prediction
0.12% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 2.0 | CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 2.5 | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N |
| CNA | 4.0 | 2.0 | CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- FFmpeg FFmpeg
Classification
- Weakness
-
- CWE-127 Buffer Under-read
References
-
github.com
/FFmpeg/FFmpeg/commit/d74f5e0559ba09d942c47687856349b03c1115dd
patch
-
github.com
/FFmpeg/FFmpeg/commit/ad2287d6d2511af66222e8f7e40d546bc8d461ec
patch
-
code.ffmpeg.org
/FFmpeg/FFmpeg/pulls/24490
issue-tracking
-
github.com
/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/proresenc_anatoliy.c#L499
technical-description
-
github.com
/FFmpeg/FFmpeg
product
-
vulncheck.com
/advisories/ffmpeg-through-9.0.2-prores-prores-aw-heap-out-of-bounds-read-in-interlaced-encoding
third-party-advisory
Sources
- CVE List CVE-2026-125188
- NVD CVE-2026-125188
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.