https://www.bleepingcomputer.com/news/security/citrix-warns-admins-to-patch-netscaler-cve-2023-4966-bug-immediately/

Citrix warned admins today to secure all NetScaler ADC and Gateway appliances immediately against ongoing attacks exploiting the CVE-2023-4966 vulnerability.

The company patched this critical sensitive information disclosure flaw (tracked as CVE-2023-4966) two weeks ago, assigning it a 9.4/10 severity rating as it's remotely exploitable by unauthenticated attackers in low-complexity attacks that don't require user interaction.