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

What is CVE-2025-10256?

CVE-2025-10256 is a medium-severity vulnerability in Ffmpeg Ffmpeg, published on 18 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

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.

Weakness: CWE-476

Which versions are affected by CVE-2025-10256?

It affects 1 product.

Products include Ffmpeg Ffmpeg.

How do I fix CVE-2025-10256?

Apply the vendor's patch.

Is CVE-2025-10256 being exploited?

There is no known exploitation of CVE-2025-10256 in the wild and no public exploit code.

Other vulnerabilities in Ffmpeg Ffmpeg

• CVE-2013-0864 Memory corruption in n/a Critical 10.0
• CVE-2013-0872 Memory corruption in n/a Critical 10.0
• CVE-2013-0873 Memory corruption in n/a Critical 10.0
• CVE-2013-4265 Null dereference in n/a Critical 10.0
• CVE-2011-3937 Memory corruption in n/a Critical 10.0

All Ffmpeg Ffmpeg vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2025-10256, GHSA-c96q-rf2r-2xj8, JLSEC-2026-641, MINI-gxj3-3j58-w22x, SUSE-SU-2026:3149-1, UBUNTU-CVE-2025-10256.