What is CVE-2022-27925?

CVE-2022-27925 is a high-severity vulnerability in Synacor Zimbra Collaboration Suite, classified under Path Traversal. CVSS score: 7.2/10. Published 2022-04-21.

How severe is CVE-2022-27925?

High severity. CVSS v3 base score is 7.2 out of 10.

Is CVE-2022-27925 known to be exploited?

Yes. CVE-2022-27925 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-08-11), indicating it is being actively exploited. 47 public proof-of-concept repositories are indexed.

Path Traversal in Synacor Zimbra Collaboration Suite

CVE-2022-27925

Zimbra Collaboration (aka ZCS) 8.8.15 and 9.0 has mboximport functionality that receives a ZIP archive and extracts files from it. An authenticated user with administrator rights has the ability to upload arbitrary files to the system, leading to directory traversal.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2022-04-21 · last modified 2026-10-01.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.987 (99.9th percentile), scored 2026-10-15.

Very high probability of exploitation in the next 30 days — among the top 0.1% most-likely-to-be-exploited CVEs. 100th percentile — 99.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.987 · newest: 0.987 · change: 0.000

Affected products

Synacor Zimbra Collaboration Suite — versions 8.8.15, 9.0.0

Weakness classification (CWE)

CWE-22 — Path Traversal

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-08-11. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-09-01.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

wiki.zimbra.com/wiki/Zimbra_Security_Advisories (Vendor Advisory)
wiki.zimbra.com/wiki/Security_Center (Vendor Advisory)
wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P24 (Release Notes, Vendor Advisory)
packetstormsecurity.com/files/168146/Zimbra-Zip-Path-Traversal.html (Exploit, VDB Entry, Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2022-27925?: CVE-2022-27925 is a high-severity vulnerability in Synacor Zimbra Collaboration Suite, classified under Path Traversal. CVSS score: 7.2/10. Published 2022-04-21.
How severe is CVE-2022-27925?: High severity. CVSS v3 base score is 7.2 out of 10.
Is CVE-2022-27925 known to be exploited?: Yes. CVE-2022-27925 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-08-11), indicating it is being actively exploited. 47 public proof-of-concept repositories are indexed.