August 11, 2022 · Applied Cybernetics Group
CVE-2022-37042 — Synacor Zimbra Collaboration Suite (ZCS)
known ransomware use
Synacor Zimbra Collaboration Suite (ZCS) Authentication Bypass Vulnerability
- Added to KEV
2022-08-11- Federal due date
2022-09-01- Vendor
- Synacor
- Product
- Zimbra Collaboration Suite (ZCS)
- EPSS
- 99.8th percentile (score 0.883, as of
2026-07-13) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2022-37042
CISA short description
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.
Required action
Apply updates per vendor instructions.