{
    "id": "CVE-2016-5771",
    "published": "2016-08-07 10:59:19",
    "last_modified": "2026-06-17 00:50:01",
    "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-416",
    "description": "spl_array.c in the SPL extension in PHP before 5.5.37 and 5.6.x before 5.6.23 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and application crash) via crafted serialized data.",
    "epss_score": "0.15484",
    "epss_percentile": "0.96710",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-03 18:17:16",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 15.5% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "opensuse",
            "product": "leap"
        },
        {
            "vendor": "opensuse",
            "product": "opensuse"
        },
        {
            "vendor": "php",
            "product": "php"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://github.com/php/php-src/commit/3f627e580acfdaf0595ae3b115b8bec677f203ee?w=1",
        "http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html",
        "http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html",
        "http://php.net/ChangeLog-5.php",
        "http://rhn.redhat.com/errata/RHSA-2016-2750.html",
        "http://www.debian.org/security/2016/dsa-3618",
        "http://www.openwall.com/lists/oss-security/2016/06/23/4",
        "http://www.securityfocus.com/bid/91401",
        "https://bugs.php.net/bug.php?id=72433",
        "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731",
        "https://support.apple.com/HT207170",
        "http://github.com/php/php-src/commit/3f627e580acfdaf0595ae3b115b8bec677f203ee?w=1",
        "http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00004.html",
        "http://lists.opensuse.org/opensuse-updates/2016-08/msg00003.html",
        "http://php.net/ChangeLog-5.php",
        "http://rhn.redhat.com/errata/RHSA-2016-2750.html",
        "http://www.debian.org/security/2016/dsa-3618",
        "http://www.openwall.com/lists/oss-security/2016/06/23/4",
        "http://www.securityfocus.com/bid/91401",
        "https://bugs.php.net/bug.php?id=72433",
        "https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731",
        "https://support.apple.com/HT207170"
    ]
}