{"cvss":9.4,"datePublished":"2023-10-18","dateUpdated":"2023-10-18","description":"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.","dueDate":"2023-11-08","id":"CVE-2023-4966","kev_catalogs":["cisa"],"knownRansomwareCampaignUse":"Known","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","product":"NetScaler ADC and NetScaler Gateway","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.","severity":"CRITICAL","source":"cisa_known_exploited","title":"Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability","vendor":"Citrix"}