How severe is CVE-2022-37042?

CVE-2022-37042 has a CVSS 3.1 base score of 9.8 (CRITICAL). EPSS estimates a 91.9% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2022-37042: Synacor Zimbra Collaboration Suite (ZCS)

CISA Known Exploited Vulnerabilities

Synacor Zimbra Collaboration Suite (ZCS) Authentication Bypass Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-08-11

Remediation due

2022-09-01

Ransomware

Known use

Required action
Apply updates per vendor instructions.

CISA notes
https://blog.zimbra.com/2022/08/authentication-bypass-in-mailboximportservlet-vulnerability/; https://nvd.nist.gov/vuln/detail/CVE-2022-37042

Description

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.

Severity

CVSS 3.1 · CISA9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
-	-	n/a

References

3 Links

Other references

Record Details

Published

2022-08-11

Last updated

2026-08-04

Assigner (CNA)

mitre

Credited to

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.