Nundina › Discover calendars › CISA Known Exploited Vulnerabilities calendar › CVE-2026-19490 - Citrix NetScalerCVE-2026-19490 - Citrix NetScaler9 September 2026Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability. Citrix NetScaler ADC and NetScaler Gateway contain an authentication-bypass vulnerability involving an alternate path or channel. When the NetScaler appliance is configured as an AAA virtual server or as a Gateway (SSL VPN, ICA Proxy, CVPN, or RDP Proxy), an unauthenticated remote threat actor may be able to bypass authentication. Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in...CISA Known Exploited Vulnerabilities calendarMore from this calendar

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