CVE-2022-37042
CriticalExploitedPublic exploitZimbra Collaboration Suite (ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP archive and extracts files from it.
Published Aug 12, 2022 · Updated Aug 12, 2026
Key Facts
Patch immediately- CVE-2022-37042 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Zimbra Collaboration Suite (Synacor).
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 10, 2022 and is known to be used in ransomware campaigns. Public exploit code is available.
- EPSS estimates a 92% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
92%
Higher than 99.8% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings, used by ransomware
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2022-37042 brief as a PDF
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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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Aug 11, 2022 | Sep 1, 2022 | Known |
| Industry KEV feed | Aug 10, 2022 | Sep 1, 2022 | Known |
| CIRCL KEV | Aug 11, 2022 | Sep 1, 2022 | Known |
| ENISA EUVD | Aug 11, 2022 | n/a | Not reported |
Required action: Apply updates per vendor instructions.
Affected Products
61 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Zimbra Collaboration SuiteSynacor | 8.8.15, 8.8.15-p1, 8.8.15-p10, 8.8.15-p11, 8.8.15-p12, 8.8.15-p13, 8.8.15-p14, 8.8.15-p15 | n/a |
Timeline
Added to Industry KEV feed
Aug 10, 2022
Added to CISA KEV
Aug 11, 2022
Added to CIRCL KEV
Aug 11, 2022
Added to ENISA EUVD
Aug 11, 2022
Publicly disclosed
Aug 12, 2022
Last updated
Aug 12, 2026
Weakness Type
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
References
- advisoryhttps://github.com/CVEProject/cvelistV5/tree/main/cves/2022/37xxx/CVE-2022-37042.json
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2022-37042
- advisoryhttps://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
- patchhttps://wiki.zimbra.com/wiki/Security_Center
- exploithttp://packetstormsecurity.com/files/168146/Zimbra-Zip-Path-Traversal.html
FAQ
Common Questions.
Zimbra Collaboration Suite (ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP archive and extracts files from it.
Affected: Zimbra Collaboration Suite (Synacor) versions 8.8.15, 8.8.15-p1, 8.8.15-p10, 8.8.15-p11, 8.8.15-p12, 8.8.15-p13, 8.8.15-p14, 8.8.15-p15. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 10, 2022 and is known to be used in ransomware campaigns.
Yes. It was added on Aug 11, 2022 with a federal remediation due date of Sep 1, 2022.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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