{
    "id": "CVE-2025-20393",
    "published": "2025-12-17 17:15:48",
    "last_modified": "2026-06-17 08:41:39",
    "cvss_score": "10.0",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
    "cwe": "CWE-20",
    "description": "A vulnerability in the Spam Quarantine feature of Cisco AsyncOS Software for Cisco Secure Email Gateway and Cisco Secure Email and Web Manager could allow an unauthenticated, remote attacker to execute arbitrary system commands on an affected device with root privileges.\r\n\r\nThis vulnerability is due to insufficient validation of HTTP requests by the Spam Quarantine feature. An attacker could exploit this vulnerability by sending a crafted HTTP request to the affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with root privileges.",
    "epss_score": "0.32392",
    "epss_percentile": "0.98279",
    "kev": 1,
    "kev_due": "2025-12-24",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:40:17",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2025-12-24."
    },
    "products": [
        {
            "vendor": "cisco",
            "product": "asyncos"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_and_web_manager_m170"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_and_web_manager_m190"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_and_web_manager_m195"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_and_web_manager_m380"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_and_web_manager_m390"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_and_web_manager_m390x"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_and_web_manager_m395"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_and_web_manager_m680"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_and_web_manager_m690"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_and_web_manager_m690x"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_and_web_manager_m695"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_and_web_manager_virtual_appliance_m100v"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_and_web_manager_virtual_appliance_m300v"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_and_web_manager_virtual_appliance_m600v"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_gateway_c195"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_gateway_c395"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_gateway_c695"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_gateway_virtual_appliance_c100v"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_gateway_virtual_appliance_c300v"
        },
        {
            "vendor": "cisco",
            "product": "secure_email_gateway_virtual_appliance_c600v"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2025-20393",
        "date_added": "2025-12-17",
        "due_date": "2025-12-24",
        "vendor": "Cisco",
        "product": "Multiple Products",
        "name": "Cisco Multiple Products Improper Input Validation Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sma-attack-N9bf4",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-20393"
    ]
}