PT-2026-64157 · FFmpeg · Ffmpeg

Adrian Junge · CVE-2026-65706 · Published 2026-07-23 · Updated 2026-07-23

Mitre

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

FFmpeg versions 3.0 through 8.1.2 contain an out-of-bounds write vulnerability in the vf swaprect video filter that allows attackers to corrupt heap memory by supplying a crafted NV12 video frame with odd width dimensions. The filter frame() function reuses a temporary row buffer sized for plane 0's single-byte pixel step across all planes, causing an 18-byte memcpy into a 17-byte heap allocation when processing the two-byte-per-sample interleaved chroma plane of a 17x16 NV12 frame, resulting in heap corruption and process crash with potential for code execution.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

CWE-131

Related Identifiers

CVE-2026-65706

Affected Products

Ffmpeg

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-65706 · Security Note
• https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/a7e38b617b32f996beaa371bbf04b39907d7a527 · Patch
• https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23779 · Note
• https://vulncheck.com/advisories/ffmpeg-vf-swaprect-out-of-bounds-write-via-nv12-frame-processing · Note