{
    "id": "CVE-2023-4966",
    "published": "2023-10-10 14:15:10",
    "last_modified": "2026-07-31 04:16:44",
    "cvss_score": "9.4",
    "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:L",
    "cwe": "CWE-119",
    "description": "Sensitive information disclosure in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA  virtual server.",
    "epss_score": "0.99999",
    "epss_percentile": "0.99997",
    "kev": 1,
    "kev_due": "2023-11-08",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:32:46",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2023-11-08."
    },
    "products": [
        {
            "vendor": "citrix",
            "product": "netscaler_application_delivery_controller"
        },
        {
            "vendor": "citrix",
            "product": "netscaler_gateway"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2023-4966",
        "date_added": "2023-10-18",
        "due_date": "2023-11-08",
        "vendor": "Citrix",
        "product": "NetScaler ADC and NetScaler Gateway",
        "name": "Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability",
        "ransomware": 1
    },
    "exploits": [],
    "refs_list": [
        "http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.html",
        "https://support.citrix.com/article/CTX579459",
        "http://packetstormsecurity.com/files/175323/Citrix-Bleed-Session-Token-Leakage-Proof-Of-Concept.html",
        "https://support.citrix.com/article/CTX579459",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-4966"
    ]
}