CVE-2026-125183 json
FFmpeg through 9.0.2 Denial of Service via HEVC PPS 3D Extension Parsing
published 2d ago modified yesterday also EUVD-2026-120272
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 5%
- public exploits
- 0
- none known
Summary
FFmpeg through 9.0.2 contains a denial of service vulnerability in pps_3d_extension() in libavcodec/hevc/ps.c that allows attackers to exhaust CPU through unbounded depth lookup table loops. Attackers can supply crafted HEVC files with repeated PPS NAL units that trigger hundreds of millions of bit skips, stalling decoders, parsers, and ffprobe.
Patch / fix
Is CVE-2026-125183 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
- 2d ago
Exploit prediction
0.17% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.8 | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| CNA | 4.0 | 6.8 | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/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-834 Excessive Iteration
References
-
github.com
/FFmpeg/FFmpeg/commit/f9f732b444a2fc27dcc4fe52084d3d435f827864
patch
-
code.ffmpeg.org
/FFmpeg/FFmpeg/pulls/25572
issue-tracking
-
github.com
/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/hevc/ps.c#L1963
technical-description
-
github.com
/FFmpeg/FFmpeg
product
-
vulncheck.com
/advisories/ffmpeg-through-9.0.2-denial-of-service-via-hevc-pps-3d-extension-parsing
third-party-advisory
Sources
- CVE List CVE-2026-125183
- NVD CVE-2026-125183
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