{
    "id": "CVE-2016-6296",
    "published": "2016-07-25 14:59:10",
    "last_modified": "2026-06-17 00:50:46",
    "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": "Integer signedness error in the simplestring_addn function in simplestring.c in xmlrpc-epi through 0.54.2, as used in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9, allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a long first argument to the PHP xmlrpc_encode_request function.",
    "epss_score": "0.06271",
    "epss_percentile": "0.93387",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-06 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": "php",
            "product": "php"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=e6c48213c22ed50b2b987b479fcc1ac709394caa",
        "http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html",
        "http://openwall.com/lists/oss-security/2016/07/24/2",
        "http://php.net/ChangeLog-5.php",
        "http://php.net/ChangeLog-7.php",
        "http://rhn.redhat.com/errata/RHSA-2016-2750.html",
        "http://www.debian.org/security/2016/dsa-3631",
        "http://www.securityfocus.com/bid/92095",
        "http://www.securitytracker.com/id/1036430",
        "http://www.ubuntu.com/usn/USN-3059-1",
        "https://bugs.php.net/72606",
        "https://lists.debian.org/debian-lts-announce/2019/11/msg00029.html",
        "https://security.gentoo.org/glsa/201611-22",
        "https://support.apple.com/HT207170",
        "http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=e6c48213c22ed50b2b987b479fcc1ac709394caa",
        "http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html",
        "http://openwall.com/lists/oss-security/2016/07/24/2",
        "http://php.net/ChangeLog-5.php",
        "http://php.net/ChangeLog-7.php",
        "http://rhn.redhat.com/errata/RHSA-2016-2750.html",
        "http://www.debian.org/security/2016/dsa-3631",
        "http://www.securityfocus.com/bid/92095",
        "http://www.securitytracker.com/id/1036430",
        "http://www.ubuntu.com/usn/USN-3059-1",
        "https://bugs.php.net/72606"
    ]
}