CVE-2026-75145: FFmpeg FFmpeg

FFmpeg Integer Narrowing Conversion OOB Memory Access in AV1 RTP Packetizer

CVSS 5.8 MediumEPSS 0.0016 · 5th percentile

Published by the CVE Program (CNA: VulnCheck) at 19 Aug 2026, 16:27 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 before b4c199c5906ff53368926c2a5839881f41957e7f git Other versions: unaffected

Identifiers

CVE-2026-75145

CNA

VulnCheck

Weakness (CWE)

CWE-681

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

CISA KEV Not listed.
EPSS 0.0016, the 5th 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 19 Aug 2026. New records show when each source confirmed them.

Sources

References from the CNA

code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24090 issue-tracking
code.ffmpeg.org/FFmpeg/FFmpeg/commit/b4c199c5906ff53368926c2a5839881f41957e7f patch
www.vulncheck.com/advisories/ffmpeg-integer-narrowing-conversion-oob-memory-access-in-av1-rtp-packetizer 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.