Citrix Patches Critical Authentication Bypass and DoS Vulnerabilities in NetScaler ADC and Gateway

Check Point Research reported that Citrix has released patches for CVE-2026-19489 and CVE-2026-19490, affecting NetScaler ADC and NetScaler Gateway. The critical authentication bypass flaw could allow unauthenticated attackers to access appliances configured with SAML authentication, while the second vulnerability can cause a denial of service.