Hackers exploit Citrix NetScaler zero-day to deploy web shells
Hackers have been observed exploiting a critical zero-day vulnerability, tracked as CVE-2023-3519, within Citrix NetScaler ADC and Gateway appliances. This flaw allows for unauthenticated remote code execution (RCE), which attackers are leveraging to install persistent PHP web shells on compromised devices to gain unauthorized access and maintain a foothold in victim networks. Security researchers and government agencies, including CISA, have warned that this vulnerability has been actively expl
🎯 Vulnerability: Remote Code Execution (RCE)
💡 Defense Fix: Avoid executing shell commands via system(). Use parameterized APIs and strict input sanitization.