{
    "id": "CVE-2017-7921",
    "published": "2017-05-06 00:29:00",
    "last_modified": "2026-06-17 01:25:28",
    "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-287",
    "description": "An Improper Authentication issue was discovered in Hikvision DS-2CD2xx2F-I Series V5.2.0 build 140721 to V5.4.0 build 160530, DS-2CD2xx0F-I Series V5.2.0 build 140721 to V5.4.0 Build 160401, DS-2CD2xx2FWD Series V5.3.1 build 150410 to V5.4.4 Build 161125, DS-2CD4x2xFWD Series V5.2.0 build 140721 to V5.4.0 Build 160414, DS-2CD4xx5 Series V5.2.0 build 140721 to V5.4.0 Build 160421, DS-2DFx Series V5.2.0 build 140805 to V5.4.5 Build 160928, and DS-2CD63xx Series V5.0.9 build 140305 to V5.3.5 Build 160106 devices. The improper authentication vulnerability occurs when an application does not adequately or correctly authenticate users. This may allow a malicious user to escalate his or her privileges on the system and gain access to sensitive information.",
    "epss_score": "0.99998",
    "epss_percentile": "0.99990",
    "kev": 1,
    "kev_due": "2026-03-26",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:21:18",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2026-03-26."
    },
    "products": [
        {
            "vendor": "hikvision",
            "product": "ds-2cd2032-i_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2112-i_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2132-i_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2212-i5_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2232-i5_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2312-i_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2332-i_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2412f-i\\(w\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2432f-i\\(w\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2512f-i\\(s\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2532f-i\\(s\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2612f-i\\(s\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2632f-i\\(s\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2712f-i\\(s\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2732f-i\\(s\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2t32-i3_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2t32-i5_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd2t32-i8_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4012f-\\(a\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4012f-\\(p\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4012f-\\(w\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4012fwd-\\(a\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4012fwd-\\(p\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4012fwd-\\(w\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4024f-\\(a\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4024f-\\(p\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4024f-\\(w\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4032fwd-\\(a\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4032fwd-\\(p\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4032fwd-\\(w\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4112f-i\\(z\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4112fwd-i\\(z\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4124f-i\\(z\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4132fwd-i\\(z\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4212f-i\\(h\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4212f-i\\(s\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4212f-i\\(z\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4212fwd-i\\(h\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4212fwd-i\\(s\\)_firmware"
        },
        {
            "vendor": "hikvision",
            "product": "ds-2cd4212fwd-i\\(z\\)_firmware"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2017-7921",
        "date_added": "2026-03-05",
        "due_date": "2026-03-26",
        "vendor": "Hikvision",
        "product": "Multiple Products",
        "name": "Hikvision Multiple Products Improper Authentication Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "http://www.hikvision.com/us/about_10805.html",
        "http://www.securityfocus.com/bid/98313",
        "https://ghostbin.com/paste/q2vq2",
        "https://ics-cert.us-cert.gov/advisories/ICSA-17-124-01",
        "http://www.hikvision.com/us/about_10805.html",
        "http://www.securityfocus.com/bid/98313",
        "https://ghostbin.com/paste/q2vq2",
        "https://ics-cert.us-cert.gov/advisories/ICSA-17-124-01",
        "https://www.hikvision.com/cn/support/CybersecurityCenter/SecurityNotices/20170314/",
        "https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification--privilege-escalating-vulnerability-in-cer/",
        "https://www.hikvision.com/us-en/support/document-center/special-notices/privilege-escalating-vulnerability-in-certain-hikvision-ip-cameras/",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-7921"
    ]
}