Medium severity · published Feb 18, 2026
CVE-2025-10256
Ffmpeg: null pointer dereference in firequalizer filter (libavfilter/af_firequalizer.c)
5.5
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FF
Ffmpeg · Ffmpeg
3.2 before 8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-10256
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-10256
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2025-10256
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2394495
Patch
https://github.com/FFmpeg/FFmpeg/commit/a25462482c02c004d685a8fcf2fa63955aaa0931
Patch
https://github.com/FFmpeg/FFmpeg/commit/d3be186ed1bcdcf2c093d6b13a0e66dc5132be2a
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