Citrix urges customers to fix critical NetScaler authentication bypass (CVE-2026-19490)

Citrix has patched two vulnerabilities in NetScaler ADC and NetScaler Gateway, including a critical authentication bypass flaw tracked as CVE-2026-19490, and is urging customers to upgrade affected appliances as soon as possible. “We strongly recommend that customers review the official NetScaler ADC and NetScaler Gateway security bulletin, assess whether their deployments are affected, and upgrade impacted appliances to the recommended builds as soon as possible,” Anil Shetty, senior VP of Engineering with Cloud Software Group … More →

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