CVE-2022-37042

9.8 criticalKEVEPSS 92%

Critical (9.8) in Synacor Zimbra Collaboration Suite (ZCS). In CISA KEV since 2022-08-11, with known ransomware use. EPSS 92% chance of exploitation in the next 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.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 92% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)
CISA KEV: listed 2022-08-11, due 2022-09-01, known ransomware use
CWE: CWE-22
Published: 2022-08-12
Modified: 2026-08-04
Record from: the NVD, synced 2026-10-19

Affected

synacor:zimbra_collaboration_suite

References

Check your stack JSON