CERT Polska, the Polish Computer Emergency Response Team (CERT), warned that attackers have begun exploiting a critical vulnerability in Zimbra Collaboration Suite (ZCS).

CERT Polska, the Polish Computer Emergency Response Team (CERT), warned that attackers have begun exploiting a critical vulnerability in Zimbra Collaboration Suite (ZCS).

Attackers exploit CVE-2026-73570 on Zimbra servers with zimbra-snmp installed and SNMP notifications enabled, allowing unauthenticated RCE.