{
    "id": "CVE-2025-59718",
    "published": "2025-12-09 18:15:54",
    "last_modified": "2026-06-17 09:46:35",
    "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-347",
    "description": "A improper verification of cryptographic signature vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11, FortiOS 7.0.0 through 7.0.17, FortiProxy 7.6.0 through 7.6.3, FortiProxy 7.4.0 through 7.4.10, FortiProxy 7.2.0 through 7.2.14, FortiProxy 7.0.0 through 7.0.21, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML response message.",
    "epss_score": "0.68293",
    "epss_percentile": "0.99311",
    "kev": 1,
    "kev_due": "2025-12-23",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:40:09",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2025-12-23."
    },
    "products": [
        {
            "vendor": "fortinet",
            "product": "fortios"
        },
        {
            "vendor": "fortinet",
            "product": "fortiproxy"
        },
        {
            "vendor": "fortinet",
            "product": "fortiswitchmanager"
        },
        {
            "vendor": "siemens",
            "product": "ruggedcom_ape1808"
        },
        {
            "vendor": "siemens",
            "product": "ruggedcom_ape1808_firmware"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2025-59718",
        "date_added": "2025-12-16",
        "due_date": "2025-12-23",
        "vendor": "Fortinet",
        "product": "Multiple Products",
        "name": "Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://fortiguard.fortinet.com/psirt/FG-IR-25-647",
        "https://arcticwolf.com/resources/blog/arctic-wolf-observes-malicious-sso-logins-following-disclosure-cve-2025-59718-cve-2025-59719/",
        "https://cert-portal.siemens.com/productcert/html/ssa-864900.html",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59718"
    ]
}