CVE-2023-4966 added to CISA KEV: Citrix NetScaler ADC and NetScaler Gateway
Status: ✅ Confirmed exploited in the wild
Date added: 2023-10-18
Required action: 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.
Due date: 2023-11-08
Why this matters
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.
Sources
Lyrie Verdict
Lyrie's autonomous detection layer catches active exploitation primitives at machine speed — closing the gap between disclosure and weaponization that traditional defense simply can't cover.