CVE-2026-65706

FFmpeg versions 3.0 through 8.1.2 contain an out-of-bounds write vulnerability in the vfswaprect video filter that allows attackers to corrupt heap memory by supplying a crafted NV12 video frame with odd width dimensions. The filterframe() 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.

Database specific

{
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "3.0"
                },
                {
                    "last_affected": "8.1.2"
                }
            ]
        },
        {
            "extracted_events": [
                {
                    "introduced": "3.0"
                },
                {
                    "last_affected": "8.1.2"
                }
            ],
            "source": "CPE_FIELD"
        },
        {
            "source": "DESCRIPTION",
            "extracted_events": [
                {
                    "introduced": "3.0"
                },
                {
                    "fixed": "8.1.2"
                }
            ]
        }
    ],
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-131",
        "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65706.json"
}

References

Affected packages

Git / github.com/ffmpeg/ffmpeg

Affected ranges

Type

GIT

Repo

https://github.com/ffmpeg/ffmpeg

Events

Introduced

c40983a6f631d22fede713d535bb9c31d5c9740c

Last affected

38b88335f99e76ed89ff3c93f877fdefce736c13

Database specific

{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "3.0"
        },
        {
            "last_affected": "8.1.2"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-65706.json"