Critical 9.8Known exploited (CISA KEV)Published Aug 11, 2022

CVE-2022-37042Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP archive and extracts files from it.

Updated under an hour ago (2026-10-19 07:10 UTC)

Does this affect you?

It affects synacor zimbra_collaboration_suite. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Aug 11, 2022; federal agencies had to remediate by Sep 1, 2022, and it is known to be used in ransomware. Treat that date as your deadline.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for synacor zimbra_collaboration_suite

Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-22
Known exploited: Added to CISA KEV Aug 11, 2022; federal remediation due Sep 1, 2022; known ransomware useApply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 91.89% (percentile 100)
Assigned by: mitre
NVD analysis: Analyzed
Record last updated: Aug 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

synacor zimbra_collaboration_suite synacor:zimbra_collaboration_suite	8.8.15; 8.8.15; 8.8.15; 8.8.15; 8.8.15; 8.8.15; 8.8.15; 8.8.15; and 53 more ranges	NVD

References

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisoriesx-refsource-misc, vendor-advisory
https://wiki.zimbra.com/wiki/Security_Centerx-refsource-misc, patch, vendor-advisory
http://packetstormsecurity.com/files/168146/Zimbra-Zip-Path-Traversal.htmlx-refsource-misc, exploit, third-party-advisory, vdb-entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-37042us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.