CVE-2022-37042Used in ransomware
SY
Synacor Zimbra Collaboration Suite (ZCS)
Synacor Zimbra Collaboration Suite (ZCS) Authentication Bypass Vulnerability
What it is
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.
What to do
Apply updates per vendor instructions.
Vendor notices and references
- blog.zimbra.com/2022/08/authentication-bypass-in-mailboximportservlet-vulnerability/
- nvd.nist.gov/vuln/detail/CVE-2022-37042
Description and required action as published by CISA. Full record at NVD.
Other Synacor entries on the list
- Zimbra Collaboration Suite (ZCS) Zimbra Collaboration Suite (ZCS) OS Command Injection Vulnerability CVE-2026-73570 · Aug 21, 2026
- Zimbra Collaboration Suite (ZCS) Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability CVE-2025-48700 · Apr 20, 2026
- Zimbra Collaboration Suite (ZCS) Synacor Zimbra Collaboration Suite (ZCS) Cross-Site Scripting Vulnerability CVE-2025-66376 · Mar 18, 2026
- Zimbra Collaboration Suite Synacor Zimbra Collaboration Suite (ZCS) Server-Side Request Forgery Vulnerability CVE-2020-7796 · Feb 17, 2026
- Zimbra Collaboration Suite (ZCS) Synacor Zimbra Collaboration Suite (ZCS) PHP Remote File Inclusion Vulnerability CVE-2025-68645 · Jan 22, 2026
- Zimbra Collaboration Suite (ZCS) Synacor Zimbra Collaboration Suite (ZCS) Cross-site Scripting Vulnerability CVE-2025-27915 · Oct 7, 2025