{
    "id": "CVE-2017-12933",
    "published": "2017-08-18 03:29:00",
    "last_modified": "2026-06-17 01:04:09",
    "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-125",
    "description": "The finish_nested_data function in ext/standard/var_unserializer.re in PHP before 5.6.31, 7.0.x before 7.0.21, and 7.1.x before 7.1.7 is prone to a buffer over-read while unserializing untrusted data. Exploitation of this issue can have an unspecified impact on the integrity of PHP.",
    "epss_score": "0.06940",
    "epss_percentile": "0.93924",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-05 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": "php",
            "product": "php"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://php.net/ChangeLog-5.php",
        "http://php.net/ChangeLog-7.php",
        "http://www.securityfocus.com/bid/99490",
        "https://access.redhat.com/errata/RHSA-2018:1296",
        "https://bugs.php.net/bug.php?id=74111",
        "https://usn.ubuntu.com/3566-1/",
        "https://usn.ubuntu.com/3566-2/",
        "https://www.debian.org/security/2018/dsa-4080",
        "https://www.debian.org/security/2018/dsa-4081",
        "http://php.net/ChangeLog-5.php",
        "http://php.net/ChangeLog-7.php",
        "http://www.securityfocus.com/bid/99490",
        "https://access.redhat.com/errata/RHSA-2018:1296",
        "https://bugs.php.net/bug.php?id=74111",
        "https://usn.ubuntu.com/3566-1/",
        "https://usn.ubuntu.com/3566-2/",
        "https://www.debian.org/security/2018/dsa-4080",
        "https://www.debian.org/security/2018/dsa-4081"
    ]
}