{
    "id": "CVE-2017-16840",
    "published": "2017-11-21 08:29:00",
    "last_modified": "2026-06-17 01:10:00",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-125",
    "description": "The VC-2 Video Compression encoder in FFmpeg 3.0 and 3.4 allows remote attackers to cause a denial of service (out-of-bounds read) because of incorrect buffer padding for non-Haar wavelets, related to libavcodec/vc2enc.c and libavcodec/vc2enc_dwt.c.",
    "epss_score": "0.03332",
    "epss_percentile": "0.88316",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-10 18:17:15",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "ffmpeg",
            "product": "ffmpeg"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=a94cb36ab2ad99d3a1331c9f91831ef593d94f74",
        "http://www.securityfocus.com/bid/101924",
        "https://github.com/FFmpeg/FFmpeg/commit/94e538aebbc9f9c529e8b1f2eda860cfb8c473b1",
        "https://www.debian.org/security/2017/dsa-4049",
        "http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=a94cb36ab2ad99d3a1331c9f91831ef593d94f74",
        "http://www.securityfocus.com/bid/101924",
        "https://github.com/FFmpeg/FFmpeg/commit/94e538aebbc9f9c529e8b1f2eda860cfb8c473b1",
        "https://www.debian.org/security/2017/dsa-4049"
    ]
}