{
  "id": "cve-2023-4966",
  "cveID": "CVE-2023-4966",
  "vendor": "Citrix",
  "product": "NetScaler ADC and NetScaler Gateway",
  "vulnerabilityName": "Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability",
  "shortDescription": "Citrix NetScaler ADC and NetScaler Gateway contain a buffer overflow vulnerability that allows for sensitive information disclosure when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server.",
  "requiredAction": "Apply mitigations and kill all active and persistent sessions per vendor instructions [https://www.netscaler.com/blog/news/cve-2023-4966-critical-security-update-now-available-for-netscaler-adc-and-netscaler-gateway/] OR discontinue use of the product if mitigations are unavailable.",
  "dateAdded": "2023-10-18",
  "dueDate": "2023-11-08",
  "knownRansomware": true,
  "cwes": [
    "CWE-119"
  ],
  "notes": "https://www.netscaler.com/blog/news/cve-2023-4966-critical-security-update-now-available-for-netscaler-adc-and-netscaler-gateway/, https://support.citrix.com/article/CTX579459/netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20234966-and-cve20234967 ;  https://nvd.nist.gov/vuln/detail/CVE-2023-4966",
  "sources": [
    {
      "label": "NVD",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4966"
    },
    {
      "label": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
    },
    {
      "label": "netscaler.com",
      "url": "https://www.netscaler.com/blog/news/cve-2023-4966-critical-security-update-now-available-for-netscaler-adc-and-netscaler-gateway/"
    },
    {
      "label": "support.citrix.com",
      "url": "https://support.citrix.com/article/CTX579459/netscaler-adc-and-netscaler-gateway-security-bulletin-for-cve20234966-and-cve20234967"
    },
    {
      "label": "nvd.nist.gov",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4966"
    }
  ],
  "cvss": {
    "score": 7.5,
    "severity": "HIGH",
    "version": "3.1",
    "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  },
  "epss": {
    "score": 0.99999,
    "percentile": 0.99998
  },
  "timeline": [
    {
      "date": "2023-10-18",
      "event": "Added to the CISA KEV catalog"
    },
    {
      "date": "2023-11-08",
      "event": "CISA remediation due date (BOD 22-01)"
    }
  ],
  "status": "past due"
}