{
    "id": "CVE-2016-6664",
    "published": "2016-12-13 21:59:01",
    "last_modified": "2026-06-17 00:51:33",
    "cvss_score": "7.0",
    "cvss_severity": "HIGH",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-59",
    "description": "mysqld_safe in Oracle MySQL through 5.5.51, 5.6.x through 5.6.32, and 5.7.x through 5.7.14; MariaDB; Percona Server before 5.5.51-38.2, 5.6.x before 5.6.32-78-1, and 5.7.x before 5.7.14-8; and Percona XtraDB Cluster before 5.5.41-37.0, 5.6.x before 5.6.32-25.17, and 5.7.x before 5.7.14-26.17, when using file-based logging, allows local users with access to the mysql account to gain root privileges via a symlink attack on error logs and possibly other files.",
    "epss_score": "0.02966",
    "epss_percentile": "0.86826",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-08 18:17:16",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "mariadb",
            "product": "mariadb"
        },
        {
            "vendor": "oracle",
            "product": "mysql"
        },
        {
            "vendor": "percona",
            "product": "percona_server"
        },
        {
            "vendor": "percona",
            "product": "xtradb_cluster"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "40679",
            "title": "MySQL / MariaDB / PerconaDB 5.5.x/5.6.x/5.7.x - 'root' System User Privilege Escalation",
            "date": "2016-11-01",
            "url": "https://www.exploit-db.com/exploits/40679"
        }
    ],
    "refs_list": [
        "http://legalhackers.com/advisories/MySQL-Maria-Percona-RootPrivEsc-CVE-2016-6664-5617-Exploit.html",
        "http://packetstormsecurity.com/files/139491/MySQL-MariaDB-PerconaDB-Root-Privilege-Escalation.html",
        "http://rhn.redhat.com/errata/RHSA-2016-2130.html",
        "http://rhn.redhat.com/errata/RHSA-2016-2749.html",
        "http://seclists.org/fulldisclosure/2016/Nov/4",
        "http://www.debian.org/security/2017/dsa-3770",
        "http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html",
        "http://www.securityfocus.com/archive/1/539695/100/0/threaded",
        "http://www.securityfocus.com/bid/93612",
        "https://access.redhat.com/errata/RHSA-2017:2192",
        "https://access.redhat.com/errata/RHSA-2018:0279",
        "https://access.redhat.com/errata/RHSA-2018:0574",
        "https://security.gentoo.org/glsa/201702-18",
        "https://www.exploit-db.com/exploits/40679/",
        "https://www.percona.com/blog/2016/11/02/percona-responds-to-cve-2016-6663-and-cve-2016-6664/",
        "http://legalhackers.com/advisories/MySQL-Maria-Percona-RootPrivEsc-CVE-2016-6664-5617-Exploit.html",
        "http://packetstormsecurity.com/files/139491/MySQL-MariaDB-PerconaDB-Root-Privilege-Escalation.html",
        "http://rhn.redhat.com/errata/RHSA-2016-2130.html",
        "http://rhn.redhat.com/errata/RHSA-2016-2749.html",
        "http://seclists.org/fulldisclosure/2016/Nov/4",
        "http://www.debian.org/security/2017/dsa-3770",
        "http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html",
        "http://www.securityfocus.com/archive/1/539695/100/0/threaded",
        "http://www.securityfocus.com/bid/93612",
        "https://access.redhat.com/errata/RHSA-2017:2192"
    ]
}