# CVE-2022-37042: Synacor Zimbra Collaboration Suite (ZCS) Authentication Bypass Vulnerability

> CVE-2022-37042: Synacor Zimbra Collaboration Suite (ZCS) Authentication Bypass Vulnerability. CVSS 9.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2022-37042
Last updated: 2026-08-04T03:55:47Z

- Published: 2022-08-11 19:37 UTC · Updated: 2026-08-04 03:55 UTC · Assigner: mitre
- CVSS: 9.8 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 91.9%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-08-11, federal due date 2022-09-01, ransomware use: Known

## 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.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Synacor: Zimbra Collaboration Suite (ZCS)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2022-37042)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2022-37042)
- [http://packetstormsecurity.com/files/168146/Zimbra-Zip-Path-Traversal.html](http://packetstormsecurity.com/files/168146/Zimbra-Zip-Path-Traversal.html)
- [https://wiki.zimbra.com/wiki/Security\_Center](https://wiki.zimbra.com/wiki/Security_Center)
- [https://wiki.zimbra.com/wiki/Zimbra\_Security\_Advisories](https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2022-37042 · Markdown: https://rewindex.com/cve/CVE-2022-37042.md · JSON: https://rewindex.com/api/v1/cves/CVE-2022-37042 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:50.477Z