{
    "id": "CVE-2026-20230",
    "published": "2026-06-03 18:16:20",
    "last_modified": "2026-07-22 19:10:00",
    "cvss_score": "8.6",
    "cvss_severity": "HIGH",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N",
    "cwe": "CWE-918",
    "description": "A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct server-side request forgery (SSRF) attacks through an affected device.\r\n\r\nThis vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to write files to the underlying operating system that could be used later to elevate to root.\r\nNote: Cisco has assigned this security advisory a Security Impact Rating (SIR) of Critical rather than High as the score indicates. The reason is that exploitation of this vulnerability could result in an attacker elevating privileges to root.\r\nNote: To exploit this vulnerability, the WebDialer service must be enabled. WebDialer is disabled by default.",
    "epss_score": "0.88200",
    "epss_percentile": "0.99765",
    "kev": 1,
    "kev_due": "2026-06-28",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:42:46",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2026-06-28."
    },
    "products": [
        {
            "vendor": "cisco",
            "product": "unified_communications_manager"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2026-20230",
        "date_added": "2026-06-25",
        "due_date": "2026-06-28",
        "vendor": "Cisco",
        "product": "Unified Communications Manager",
        "name": "Cisco Unified Communications Manager Server-Side Request Forgery (SSRF) Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-ssrf-cXPnHcW",
        "https://denizhalil.com/2026/06/12/cve-2026-20230-cisco-unified-cm-ssrf/",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20230"
    ]
}