Citrix NetScaler auth bypass CVE-2026-19490 exploited in the wild

Threat actors are actively exploiting a critical Citrix NetScaler authentication bypass vulnerability (CVE-2026-19490), per Previdian. The flaw allows unauthenticated access, likely leading to session hijacking or lateral movement. This marks a shift from proof-of-concept to active exploitation, increasing risk for enterprises using NetScaler.