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CVE-2026-65706 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/a7e38b617b32f996beaa371bbf04b39907d7a527	[email protected]	Patch
https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23779	[email protected]	Issue TrackingPatch
https://www.vulncheck.com/advisories/ffmpeg-vf-swaprect-out-of-bounds-write-via-nv12-frame-processing	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-131	Incorrect Calculation of Buffer Size	[email protected]
CWE-787	Out-of-bounds Write	[email protected]

Affected Products

Product	Versions
ffmpeg ffmpeg	>= 3.0, <= 8.1.2
CPE cpe:2.3:a:ffmpeg:ffmpeg:::::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Aug 7, 2026	Initial Analysis	[email protected]
Jul 24, 2026	CVE Modified	CISA-ADP
Jul 23, 2026	New CVE Received	[email protected]
Jul 23, 2026	CVE Modified	CISA-ADP