Critical Zimbra RCE flaw now actively exploited in attacks

Critical Zimbra RCE flaw now actively exploited in attacks

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

CISA Adds One Known Exploited Vulnerability to Catalog

CISA Adds One Known Exploited Vulnerability to Catalog awallace Aug 21, 2026 Release DateAugust 21, 2026 DescriptionCISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation.  CVE-2026-73570 Zimbra Collaboration Suite (ZCS) OS Command Injection VulnerabilityThis type of vulnerability is a frequent attack vector for malicious cyber actors and poses significant risks to th…

Poland’s CERT Warns of Active Exploitation of Critical Zimbra Collaboration Suite Flaw

Poland’s CERT Warns of Active Exploitation of Critical Zimbra Collaboration Suite Flaw Pierluigi Paganini August 21, 2026 CERT Polska confirmed active exploitation of CVE-2026-73570, a critical unauthenticated RCE in Zimbra Collaboration Suite patched on July 20. CERT Polska, Poland’s national computer emergency response team, confirmed this week that threat actors are actively exploiting a critical vulnerability in Zimbra Collab…

Hackers Target Zimbra Servers in Active Exploitation Campaign

Exploitation of the Zimbra Collaboration vulnerability CVE-2026-73570 has been observed by Poland’s CERT Polska. The post Hackers Target Zimbra Servers in Active Exploitation Campaign appeared first on SecurityWeek.