CVE-2026-19490: Citrix NetScaler
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.
- Vendor
- Citrix
- Product
- NetScaler
- Vulnerability
- Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability
- Date added
- Sep 9, 2026
- CISA due date (U.S. federal agencies)
- Sep 12, 2026
- Known ransomware campaign use
- Unknown
- Weakness (CWE)
- CWE-288
References
This site summarizes CISA's catalog for information only. It is not security advice — follow your vendor's guidance and official advisories.
Last updated: · Catalog version 2026.10.02