CVE-2022-37042

CVE-2022-37042 is a critical-severity vulnerability in Synacor Zimbra Collaboration Suite with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-08-11). The underlying weakness is classified as CWE-22.

Key facts

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.

Frequently asked questions

What is CVE-2022-37042?
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.
How severe is CVE-2022-37042?
CVE-2022-37042 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-37042 being actively exploited?
Yes. CVE-2022-37042 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-08-11, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2022-37042?
CVE-2022-37042 primarily affects Synacor Zimbra Collaboration Suite. In total, 61 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-37042?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2022-37042 have an EU (EUVD) identifier?
Yes. CVE-2022-37042 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-39696. It is also flagged as exploited in the EUVD (since 2022-08-11).
When was CVE-2022-37042 published?
CVE-2022-37042 was published on 2022-08-12 and last updated on 2026-08-04.

References

Affected products (61)

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