A heap buffer overflow vulnerability in FFmpeg before commit 4bf784c allows attackers to trigger a memory corruption via supplying a crafte…

published 2025-02-18 20 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-4649

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 28%
public exploits: 0; none known

A heap buffer overflow vulnerability in FFmpeg before commit 4bf784c allows attackers to trigger a memory corruption via supplying a crafted media file in avformat when processing tile grid group streams. This can lead to a Denial of Service (DoS).

Patch / fix

distros 2 links 1

opensuse alpine

ffmpeg-7 openSUSE Tumbleweed 7.1-3.1

opensuse advisories openSUSE-SU-2025:14834-1

ffmpeg Alpine 3.24, Alpine 3.23 8.0-r0

alpine advisories ALPINE-CVE-2025-22920

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

git.ffmpeg.org/gitweb/ffmpeg.git@4bf784c commit

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-22920 updated 2025-11-21 cvss 6.5

ffmpeg: Heap Buffer Overflow in FFmpeg avformat

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 20 mo ago (2025-02-19)

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Classification

Weakness

CWE-122 Heap-based Buffer Overflow

References

Sources

CVE List CVE-2025-22920
NVD CVE-2025-22920

Fencer Vulns 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.

Summary