VulnerabilityBleeping Computer
9.0 — CRITICAL
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. [...]
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
Attackers have begun exploiting a critical-severity Citrix NetScaler auth bypass vulnerability (CVE-2026-19490) in the wild, targeting systems configured as AAA virtual servers or Gateways with specific firmware versions and SAML Action configurations.
⚙️Technical Details
💥Impact Assessment
Severity: Critical
Who Is at Risk
Organizations with Citrix NetScaler appliances on their networks
🛡️Recommended Actions
1Review official NetScaler ADC and Gateway security bulletin to assess deployment impact
2Upgrade impacted appliances to recommended builds as soon as possible
3Patch vulnerable configurations immediately
📦Affected Products
Software:NetScaler ADCNetScaler GatewayHardware:
🔐NVD Verified DataVERIFIED
Weaknesses
CWE-288
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