CVE-2026-107677: FFmpeg FFmpeg

FFmpeg through 9.0.2 DASH Demuxer Infinite Loop via Empty SegmentTemplate Media

CVSS 5.7 MediumEPSS 0.0014 · 3rd percentile

Published by the CVE Program (CNA: VulnCheck) at 8 Oct 2026, 15:28 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
FFmpeg	FFmpeg pkg:github/ffmpeg/ffmpeg	affected 9.0.2 and earlier semver Other versions: unaffected

Identifiers

CVE-2026-107677

CNA

VulnCheck

Weakness (CWE)

CWE-835

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.7	Medium	4.0	CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
4.7	Medium	3.1	CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0014, the 3rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 8 Oct 2026. New records show when each source confirmed them.

Sources

References from the CNA

code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24592 patch
code.ffmpeg.org/FFmpeg/FFmpeg/commit/ed27bfcbbbc0872c0195eaf4dd2c0c93b9f1778e patch
github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/avstring.c#L230-L238 technical-description
github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavformat/dashdec.c#L1726 technical-description
ffmpeg.org/ product
www.vulncheck.com/advisories/ffmpeg-through-9.0.2-dash-demuxer-infinite-loop-via-empty-segmenttemplate-media third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.