CVE-2026-66036 | FFmpeg up to 8.1.2 vf_hqdn3d filter vf_hqdn3d.config_input/denoise_spatial heap-based overflow

A vulnerability classified as critical was found in FFmpeg up to 8.1.2. This vulnerability affects the function vf_hqdn3d.config_input/denoise_spatial of the component vf_hqdn3d filter. Such manipulation leads to heap-based buffer overflow.

This vulnerability is uniquely identified as CVE-2026-66036. The attack can be launched remotely. No exploit exists.

It is advisable to implement a patch to correct this issue.