{
    "id": "CVE-2016-4437",
    "published": "2016-06-07 14:06:13",
    "last_modified": "2026-06-17 00:47:33",
    "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-321",
    "description": "Apache Shiro before 1.2.5, when a cipher key has not been configured for the \"remember me\" feature, allows remote attackers to execute arbitrary code or bypass intended access restrictions via an unspecified request parameter.",
    "epss_score": "0.93039",
    "epss_percentile": "0.99831",
    "kev": 1,
    "kev_due": "2022-05-03",
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:20:31",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-05-03."
    },
    "products": [
        {
            "vendor": "apache",
            "product": "aurora"
        },
        {
            "vendor": "apache",
            "product": "shiro"
        },
        {
            "vendor": "redhat",
            "product": "fuse"
        },
        {
            "vendor": "redhat",
            "product": "jboss_middleware_text-only_advisories"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2016-4437",
        "date_added": "2021-11-03",
        "due_date": "2022-05-03",
        "vendor": "Apache",
        "product": "Shiro",
        "name": "Apache Shiro Code Execution Vulnerability",
        "ransomware": 0
    },
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "48410",
            "title": "Apache Shiro 1.2.4 - Cookie RememberME Deserial RCE (Metasploit)",
            "date": "2020-05-01",
            "url": "https://www.exploit-db.com/exploits/48410"
        }
    ],
    "refs_list": [
        "http://packetstormsecurity.com/files/137310/Apache-Shiro-1.2.4-Information-Disclosure.html",
        "http://packetstormsecurity.com/files/157497/Apache-Shiro-1.2.4-Remote-Code-Execution.html",
        "http://rhn.redhat.com/errata/RHSA-2016-2035.html",
        "http://rhn.redhat.com/errata/RHSA-2016-2036.html",
        "http://www.securityfocus.com/archive/1/538570/100/0/threaded",
        "http://www.securityfocus.com/bid/91024",
        "https://lists.apache.org/thread.html/ef3a800c7d727a00e04b78e2f06c5cd8960f09ca28c9b69d94c3c4c4%40%3Cannouncements.aurora.apache.org%3E",
        "http://packetstormsecurity.com/files/137310/Apache-Shiro-1.2.4-Information-Disclosure.html",
        "http://packetstormsecurity.com/files/157497/Apache-Shiro-1.2.4-Remote-Code-Execution.html",
        "http://rhn.redhat.com/errata/RHSA-2016-2035.html",
        "http://rhn.redhat.com/errata/RHSA-2016-2036.html",
        "http://www.securityfocus.com/archive/1/538570/100/0/threaded",
        "http://www.securityfocus.com/bid/91024",
        "https://lists.apache.org/thread.html/ef3a800c7d727a00e04b78e2f06c5cd8960f09ca28c9b69d94c3c4c4%40%3Cannouncements.aurora.apache.org%3E",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4437"
    ]
}