{
    "id": "CVE-2021-40113",
    "published": "2021-11-04 16:15:09",
    "last_modified": "2026-06-17 04:06:32",
    "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-284",
    "description": "Multiple vulnerabilities in the web-based management interface of the Cisco Catalyst Passive Optical Network (PON) Series Switches Optical Network Terminal (ONT) could allow an unauthenticated, remote attacker to perform the following actions: Log in with a default credential if the Telnet protocol is enabled Perform command injection Modify the configuration For more information about these vulnerabilities, see the Details section of this advisory.",
    "epss_score": "0.04630",
    "epss_percentile": "0.91461",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-07 18:17:27",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (10), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "cisco",
            "product": "catalyst_pon_switch_cgp-ont-1p"
        },
        {
            "vendor": "cisco",
            "product": "catalyst_pon_switch_cgp-ont-1p_firmware"
        },
        {
            "vendor": "cisco",
            "product": "catalyst_pon_switch_cgp-ont-4p"
        },
        {
            "vendor": "cisco",
            "product": "catalyst_pon_switch_cgp-ont-4p_firmware"
        },
        {
            "vendor": "cisco",
            "product": "catalyst_pon_switch_cgp-ont-4pv"
        },
        {
            "vendor": "cisco",
            "product": "catalyst_pon_switch_cgp-ont-4pv_firmware"
        },
        {
            "vendor": "cisco",
            "product": "catalyst_pon_switch_cgp-ont-4pvc"
        },
        {
            "vendor": "cisco",
            "product": "catalyst_pon_switch_cgp-ont-4pvc_firmware"
        },
        {
            "vendor": "cisco",
            "product": "catalyst_pon_switch_cgp-ont-4tvcw"
        },
        {
            "vendor": "cisco",
            "product": "catalyst_pon_switch_cgp-ont-4tvcw_firmware"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-catpon-multivulns-CE3DSYGr",
        "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-catpon-multivulns-CE3DSYGr"
    ]
}