Citrix has warned customers to immediately secure their systems against two vulnerabilities affecting NetScaler Gateway secure remote access solutions and NetScaler ADC networking appliances.

Citrix has patched CVE-2026-19490, a critical-severity vulnerability in NetScaler leading to authentication bypass.

In Netscaler ADC und Gateway von Citrix können Angreifer mehrere Lücken missbrauchen. Sie können etwa unbefugt Zugriff erlangen.