{
    "id": "CVE-2023-20126",
    "published": "2023-05-04 20:15:09",
    "last_modified": "2026-06-17 05:29:33",
    "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-306",
    "description": "A vulnerability in the web-based management interface of Cisco SPA112 2-Port Phone Adapters could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. This vulnerability is due to a missing authentication process within the firmware upgrade function. An attacker could exploit this vulnerability by upgrading an affected device to a crafted version of firmware. A successful exploit could allow the attacker to execute arbitrary code on the affected device with full privileges. Cisco has not released firmware updates to address this vulnerability.",
    "epss_score": "0.36679",
    "epss_percentile": "0.98459",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-02 18:17:37",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 36.7% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "cisco",
            "product": "spa112"
        },
        {
            "vendor": "cisco",
            "product": "spa112_firmware"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-spa-unauth-upgrade-UqhyTWW",
        "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-spa-unauth-upgrade-UqhyTWW"
    ]
}