CVE-2026-65705

HIGH
MEDIUM Priority: 0.01 BB Relevance: 40/100
Published: 2026-07-23 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Passive
S: X
AT: Present
VC: High
VI: High
VA: High

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, resulting in heap corruption and process crash with potential for code execution depending on heap layout and process hardening.

Weakness Classification (2)

Affected Software (1)

VendorProductVersion
ffmpeg ffmpeg 3.4 – 8.1.2

Bug Bounty Relevance

40 / 100
✓ No authentication
✓ Low complexity

CVSS Score

7.3 / 10.0 v4.0
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.19%
Raw Score 0.001870
Percentile 8.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00187
2026-10-28
0.00187

Intelligence Sources

nvd ref →