Experts Urge Priority Patching for Critical Citrix NetScaler ADC and Gateway Vulnerability (CVE-2026-19490)

Security researchers are advising urgent action to patch a critical authentication bypass vulnerability (CVE-2026-19490) in Citrix NetScaler ADC and NetScaler Gateway devices. With a CVSS score of 9.3, this flaw could allow unauthenticated attackers to bypass security features, and while no active exploitation has been confirmed, its high value makes exploitation inevitable.