Critical Citrix NetScaler auth bypass now leveraged in attacks

Attackers have begun targeting a critical-severity Citrix NetScaler auth bypass flaw (CVE-2026-19490) in the wild, according to vulnerability intelligence company Previdian. Attackers have begun targeting a critical-severity Citrix NetScaler flaw in the wild, according to vulnerability intelligence company Previdian [1].

Sources

1. bleepingcomputer.com · Critical Citrix NetScaler auth bypass now leveraged in attacks Sep 4, 2026

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