Zero-Day Attacks Exploited Critical Vulnerability in Citrix ADC and Gateway

Citrix isalertingusers of a critical security flaw in NetScaler Application Delivery Controller (ADC) and Gateway that it said is being actively exploited in the wild. Tracked asCVE-2023-3519(CVSS score: 9.8), the issue relates to a case ofcode injectionthat could result in unauthenticated remote code execution. It impacts the following versions -

NetScaler ADC and NetScaler Gateway 13.1