CVE-2023-4966

CRITICAL9.4

CISA KEV

Published 2023-10-10 · Updated 2026-07-31 · Source secure@citrix.com

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.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

CWE-119

CISA Known-Exploited Vulnerability

Product: Citrix — NetScaler ADC and NetScaler Gateway

Name: Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability

Date added: 2023-10-18 · Due: 2023-11-08

USED IN RANSOMWARE

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.

References

View on NVD

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