CVE-2023-4966 — Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow Vulnerability

CVE-2023-4966

CRITICAL · CVSS 9.4 ⚠ KEV — EXPLOITED

EPSS exploitation probability: 100%

⚠ Listed in the CISA Known Exploited Vulnerabilities catalog — actively exploited.

Published 2023-10-18 · Last modified 2026-07-31T04:16:44.230

Summary

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.

Affected products

Citrix — NetScaler ADC and NetScaler Gateway

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References

NVD entry
CVE.org record

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.