Synacor Zimbra Collaboration Suite (ZCS) Authentication Bypass Vulnerability (CVE-2022-37042)
Severity: critical · Patch status: patched · Since 2022-08-11 · CVE-2022-37042
Synacor Zimbra Collaboration Suite (ZCS) contains an authentication bypass vulnerability in MailboxImportServlet. This vulnerability was chained with CVE-2022-27925 which allows for unauthenticated remote code execution. CISA added CVE-2022-37042 to its Known Exploited Vulnerabilities catalog on Aug 11, 2022, which means attackers are exploiting it in the wild. CISA reports known use in ransomware campaigns.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by Sep 1, 2022 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch