HIGHVulnerability
Verified
Global

CISA KEV: Citrix NetScaler — Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability

·Source: CISA KEV

Updated:

Executive Summary

Citrix NetScaler ADC and NetScaler Gateway contain an authentication-bypass vulnerability involving an alternate path or channel. When the NetScaler appliance is configured as an AAA virtual server or as a Gateway (SSL VPN, ICA Proxy, CVPN, or RDP Proxy), an unauthenticated remote threat actor may be able to bypass authentication.

Analysis

Citrix NetScaler ADC and NetScaler Gateway contain an authentication-bypass vulnerability involving an alternate path or channel. When the NetScaler appliance is configured as an AAA virtual server or as a Gateway (SSL VPN, ICA Proxy, CVPN, or RDP Proxy), an unauthenticated remote threat actor may be able to bypass authentication. Added to CISA Known Exploited Vulnerabilities catalog on 2026-09-09. Remediation due: 2026-09-12.

Indicators of Compromise (1)

CVE (1)
CVE-2026-19490
NVDMITRE CVE
Source Attribution

Originally published by CISA KEV on Sep 9, 2026. Verified by: CISA.

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