{
    "id": "CVE-2016-6354",
    "published": "2016-09-21 14:25:20",
    "last_modified": "2026-06-17 00:50:52",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.0",
    "cvss_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-119",
    "description": "Heap-based buffer overflow in the yy_get_next_buffer function in Flex before 2.6.1 might allow context-dependent attackers to cause a denial of service or possibly execute arbitrary code via vectors involving num_to_read.",
    "epss_score": "0.08767",
    "epss_percentile": "0.95026",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-05 18:17:14",
    "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": "westes",
            "product": "flex"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://www.debian.org/security/2016/dsa-3653",
        "http://www.openwall.com/lists/oss-security/2016/07/18/8",
        "http://www.openwall.com/lists/oss-security/2016/07/26/12",
        "https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466",
        "https://security.gentoo.org/glsa/201701-31",
        "http://www.debian.org/security/2016/dsa-3653",
        "http://www.openwall.com/lists/oss-security/2016/07/18/8",
        "http://www.openwall.com/lists/oss-security/2016/07/26/12",
        "https://github.com/westes/flex/commit/a5cbe929ac3255d371e698f62dc256afe7006466",
        "https://security.gentoo.org/glsa/201701-31"
    ]
}