HIGH

CVE-2026-65705

CVSS v3

7.8

HIGH

EPSS Score

0.1%

exploit probability

CISA KEV

No

known exploited

Exploitation

SSVC status

Description

FFmpeg versions 3.4 through 8.1.2 contain an out-of-bounds write vulnerability in the vf_floodfill video filter that allows attackers to corrupt heap memory by supplying a dynamically sized video stream with filtergraph reinitialization disabled via -reinit_filter 0. When config_input() allocates the points traversal stack based on initial frame dimensions and a subsequent larger frame is processed, filter_frame() performs flood-fill neighbor pushes beyond the original allocation boundary, resul

Technical details

CVSS v3 Vector
3.1
Published
7/23/2026
Last Modified
7/24/2026

Frequently asked questions

What is CVE-2026-65705?

FFmpeg versions 3.4 through 8.1.2 contain an out-of-bounds write vulnerability in the vf_floodfill video filter that allows attackers to corrupt heap memory by supplying a dynamically sized video stream with filtergraph reinitialization disabled via -reinit_filter 0. When config_input() allocates the points traversal stack based on initial frame dimensions and a subsequent larger frame is processed, filter_frame() performs flood-fill neighbor pushes beyond the original allocation boundary, resul

Is CVE-2026-65705 actively exploited?

Active exploitation of CVE-2026-65705 has not been confirmed. The EPSS score is 0.1%, indicating the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-65705?

CVE-2026-65705 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string 3.1.

Is CVE-2026-65705 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.