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CVE-2022-37042

98
FAUCET Score

CVE-2022-37042 is a critical remote code execution vulnerability affecting Zimbra Collaboration Suite (ZCS) versions 8.8.15 and 9.0. It allows unauthenticated attackers to upload arbitrary files via directory traversal within the mboximport functionality, a flaw stemming from an incomplete fix for CVE-2022-27925. With a CVSS score of 9.8 (Critical), this vulnerability is easily exploitable over the network without authentication and can lead to complete compromise of confidentiality, integrity, and availability. Its EPSS score of 0.943330000 and FAUCET Risk Score of 100/100 highlight its extreme exploitability and impact. This CVE is actively exploited, including in known ransomware campaigns, and is listed in CISA's KEV catalog. Exploit code is publicly available via Metasploit modules and Nuclei templates, and it has garnered significant community discussion and media coverage, including reports of North Korean hackers leveraging the flaw.

Impacted Technologies

VendorProductVersion(s)CPE
8.8.15CPE matchmatch criteria
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:-:*:*:*:*:*:*
8.8.15CPE matchmatch criteria
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p1:*:*:*:*:*:*
8.8.15CPE matchmatch criteria
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p10:*:*:*:*:*:*
8.8.15CPE matchmatch criteria
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p11:*:*:*:*:*:*
8.8.15CPE matchmatch criteria
cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.15:p12:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
88.80%
Probability of exploitation in next 30 days
EPSS Percentile
99.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Aug 11, 2022
Metasploit: Zip Path Traversal in Zimbra (mboximport) (CVE-2022-27925) · May 10, 2022
Nuclei: CVE-2022-37042 · Aug 17, 2022
This CVE's current EPSS score of 0.8880 is in the 99th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
packetstormsecurity.com / files/168146/Zimbra-Zip-Path-Traversal.html
ExploitThird Party AdvisoryVDB Entry
wiki.zimbra.com / wiki/Security_Center
PatchVendor Advisory
wiki.zimbra.com / wiki/Zimbra_Security_Advisories
Vendor Advisory