October 30, 2026

CVE Watchtower

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CVE-2023-4966NVD

Vulnerability 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.
Severity Level
CRITICAL(9.4)
Published Date
Oct 10, 2023
Last Modified
Jul 31, 2026
PoC
Available(Metasploit, Nuclei)
Exploitation Status
ACTIVE
EPSS Score (30-Day)
100.00%Probability
Root Weakness (CWE)
CWE-119: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.1 Base Metrics — Score 9.4 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityLow

Affected & Patched Versions

Affected Versions
  • Citrix Netscaler Application Delivery Controller >= 12.1 and < 12.1-55.300
  • Citrix Netscaler Application Delivery Controller >= 13.0 and < 13.0-92.19
  • Citrix Netscaler Application Delivery Controller >= 13.1 and < 13.1-37.164
  • Citrix Netscaler Application Delivery Controller >= 13.1 and < 13.1-49.15
  • Citrix Netscaler Application Delivery Controller >= 14.1 and < 14.1-8.50
  • Citrix Netscaler Gateway >= 13.0 and < 13.0-92.19
  • Citrix Netscaler Gateway >= 13.1 and < 13.1-49.15
  • Citrix Netscaler Gateway >= 14.1 and < 14.1-8.50
Patched Versions
  • Citrix Netscaler Application Delivery Controller 12.1-55.300
  • Citrix Netscaler Application Delivery Controller 13.0-92.19
  • Citrix Netscaler Application Delivery Controller 13.1-37.164
  • Citrix Netscaler Application Delivery Controller 13.1-49.15
  • Citrix Netscaler Application Delivery Controller 14.1-8.50
  • Citrix Netscaler Gateway 13.0-92.19
  • Citrix Netscaler Gateway 13.1-49.15
  • Citrix Netscaler Gateway 14.1-8.50
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🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References