Vulnerability · Published Feb 18, 2026 · Assigned by fedora

CVE-2025-10256Ffmpeg: null pointer dereference in firequalizer filter (libavfilter/af_firequalizer.c)

Medium 5.3

In plain English

A medium-severity null pointer dereference in ffmpeg. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.3%top 71.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A NULL pointer dereference vulnerability exists in FFmpeg’s Firequalizer filter (libavfilter/af_firequalizer.c) due to a missing check on the return value of av_malloc_array() in the config_input() function. An attacker could exploit this by tricking a victim into processing a crafted media file with the Firequalizer filter enabled, causing the application to dereference a NULL pointer and crash, leading to denial of service.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	ffmpeg	no fix listed	DEBIAN-CVE-2025-10256
Debian:13	ffmpeg	7:7.1.2-0+deb13u1	DEBIAN-CVE-2025-10256
Debian:13	ffmpeg	7:7.1.2-0+deb13u1	DSA-6007-1
Debian:14	ffmpeg	7:7.1.2-1	DEBIAN-CVE-2025-10256
Ubuntu:25.10	ffmpeg	no fix listed	UBUNTU-CVE-2025-10256
Ubuntu:26.10	ffmpeg	no fix listed	UBUNTU-CVE-2025-10256

Affected products (as reported)

Vendor	Product	Versions
	ffmpeg	3.2 – before 8.0

Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

https://access.redhat.com/security/cve/CVE-2025-10256 vdb-entry, x_refsource_REDHAT
RHBZ#2394495 issue-tracking, x_refsource_REDHAT
https://github.com/FFmpeg/FFmpeg/commit/a25462482c02c004d685a8fcf2fa63955aaa0931
https://github.com/FFmpeg/FFmpeg/commit/d3be186ed1bcdcf2c093d6b13a0e66dc5132be2a