CISA and the Multi-State Information Sharing & Analysis Center, or MS-ISAC are publishing this joint Cybersecurity Advisory in response to active exploitation of multiple Common Vulnerabilities and Exposures against Zimbra Collaboration Suite, an enterprise cloud-hosted collaboration software and email platform.

AA22-228A Alert, Technical Details, and Mitigations

Volexity’s Mass Exploitation of (Un)authenticated Zimbra RCE: CVE-2022-27925

Hackers are actively exploiting password-stealing flaw in Zimbra

CISA adds Zimbra email vulnerability to its exploited vulnerabilities catal…

CVE-2022-27925 detail

Mass exploitation of (un)authenticated Zimbra RCE: CVE-2022-27925

CVE-2022-37042 detail

Authentication bypass in MailboxImportServlet vulnerability

CVE-2022-30333 detail

UnRAR vulnerability exploited in the wild, likely against Zimbra servers

Zimbra Collaboration Kepler 9.0.0 patch 25 GA release

Zimbra UnRAR path traversal

Operation EmailThief: Active exploitation of zero-day XSS vulnerability in…

Hotfix available 5 Feb for zero-day exploit vulnerability in Zimbra 8.8.15

All organizations should report incidents and anomalous activity to CISA’s 24/7 Operations Center at [email protected] or (888) 282-0870 and to the FBI via your local FBI field office or the FBI’s 24/7 CyWatch at (855) 292-3937 or [email protected].

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