CVE-2026-107678

mediumpriority · track · 19EPSS 0.001 · 1 %ileDEUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.09% (1st) EPSS

CVSS 4.7 · medium

Is it mine?

2 products

Check your exposure

Who says so?

2 sources

cert_bund · nvd

EPSS · scored 2026-10-26

FFmpeg through 9.0.2 contains a stack exhaustion vulnerability in av_encryption_init_info_free() in libavutil/encryption_info.c, which recursively frees AVEncryptionInitInfo linked lists built by the MOV demuxer's mov_read_pssh(). Attackers can supply a crafted MP4 file with tens of thousands of small pssh boxes to exhaust the stack and crash the process, while also causing quadratic CPU consumption.

cvss

Technical severity, 0–10. One row per scoring source.

5.7

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.9–5.7

v3.14.7mediumCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:Hprimary · disclosure@vulncheck.comexploitability 1 · impact 3.6

v4.05.7mediumCVSS:4.0/AV:L/AC:H/AT:P/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:Xsecondary · disclosure@vulncheck.com

v4.01.9lowCVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/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:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-674US

affected products (2)

Products and version ranges known to be affected.

Open Source ffmpegall versionscert_bundDEcpe:/a:ffmpeg:ffmpeg:-
ffmpeg ffmpeg≤ 9.0.2nvdUScpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3820ffmpeg: Mehrere SchwachstellenDeutsch2026-10-08csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in ffmpeg ausnutzen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Daten zu manipulieren und um Sicherheitsvorkehrungen zu umgehen.

sources

Which sources assert this record, and when.

cert_bund nvd NVD CVE.org MITRE

published 2026-10-08modified 2026-10-14

references (5) nvd

External citations — patches, advisories, analysis.

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24593Issue TrackingPatch
https://ffmpeg.org/Product
https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavformat/mov.c#L8070Product
https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/encryption_info.c#L219-L231Product
https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-stack-exhaustion-via-recursive-free-of-pssh-boxesThird Party Advisory

scry

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