Zimbra Collaboration

2 known vulnerabilities in Zimbra Collaboration, 2 actively exploited, with patch priority, exploit likelihood and the news covering them.

Recently exploited

  • CVE-2026-73570 CVSS 8.9 high · actively exploited Zimbra Collaboration Suite (ZCS) OS Command Injection Vulnerability
  • CVE-2025-66376 CVSS 6.1 medium · actively exploited Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting Vulnerability

Latest vulnerabilities

  • CVE-2026-73570 CVSS 8.9 high · actively exploited Zimbra Collaboration Suite (ZCS) OS Command Injection Vulnerability
  • CVE-2025-66376 CVSS 6.1 medium · actively exploited Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting Vulnerability