Citrix urges patch for critical NetScaler RCE flaw CVE-2026-107406
Citrix issued an advisory telling administrators to immediately patch a critical memory-overflow vulnerability in NetScaler ADC and NetScaler Gateway appliances, tracked as CVE-2026-107406. The bug can allow remote code execution or crash devices via denial-of-service, but only affects appliances configured as SAML Identity Provider or Service Provider. Citrix said it has not detected any active exploitation so far and listed specific firmware versions customers should upgrade to.