{
    "id": "CVE-2025-53521",
    "published": "2025-10-15 14:15:48",
    "last_modified": "2026-06-17 09:38:22",
    "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-121",
    "description": "When a BIG-IP APM access policy is configured on a virtual server, specific malicious traffic can lead to Remote Code Execution (RCE).  \n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
    "epss_score": "0.02295",
    "epss_percentile": "0.82573",
    "kev": 1,
    "kev_due": "2026-03-30",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:39:41",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2026-03-30."
    },
    "products": [
        {
            "vendor": "f5",
            "product": "big-ip_access_policy_manager"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2025-53521",
        "date_added": "2026-03-27",
        "due_date": "2026-03-30",
        "vendor": "F5",
        "product": "BIG-IP",
        "name": "F5 BIG-IP Stack-Based Buffer Overflow Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://my.f5.com/manage/s/article/K000156741",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-53521"
    ]
}