CVE-2022-37042
Synacor Zimbra Collaboration Suite (ZCS) Authentication Bypass Vulnerability
- Published
- Aug 11, 2022
- Updated
- Aug 4, 2026
- Assigning CNA
- mitre
- Evidence observed
- Aug 11, 2022
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 99.8%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP archive and extracts files from it. By bypassing authentication (i.e., not having an authtoken), an attacker can upload arbitrary files to the system, leading to directory traversal and remote code execution. NOTE: this issue exists because of an incomplete fix for CVE-2022-27925.
Sources
4- CVE-2022-37042Exploit
CVE-2022-37042 Zimbra Auth Bypass leads to RCE
- CVE-2022-37042Exploit
Zimbra CVE-2022-37042 Nuclei weaponized template
Exploit for Zimbra Collaboration Suite vulnerabilities CVE-2022-37042 and CVE-2022-27925, enabling unauthenticated remote code execution and file upload bypass for security testing.
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