Trustwave Action Response: Zero-Day Vulnerability in Citrix ADC (CVE-2022-27518)
On Tuesday, December 13, a joint announcement from the United States NSA and Citrix announced a zero-day vulnerability in Citrix ADC. The vulnerability (CVE-2022-27518) is a critical unauthenticated Remote Code Execution (RCE) issue currently rated as CVSS 9.8. Patches are already available from Citrix. The NSA attributes the zero-day to APT5, a Chinese hacking collective. There is currently no guidance for how widespread the campaign has been or how long it's been ongoing.