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Vulnerabilities

Vulnerability · CVE-2022-27925

Synacor Zimbra Collaboration Suite (ZCS) Arbitrary File Upload Vulnerability

Published Apr 20, 2022 · catalog updated Oct 1, 2026 · Synacor Zimbra Collaboration Suite (ZCS)

Patch now

CVE-2022-27925 is in the CISA known-exploited catalog, due Sep 1, 2022. Confirm Synacor Zimbra Collaboration Suite (ZCS) against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
High7.2
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
98.68%
Remediation
Remediation guidance
Affected products
cpe synacor/zimbra collaboration suite · vendor Synacor Zimbra Collaboration Suite (ZCS)

Synacor Zimbra Collaboration Suite (ZCS) contains flaw in the mboximport functionality, allowing an authenticated attacker to upload arbitrary files to perform remote code execution. This vulnerability was chained with CVE-2022-37042 which allows for unauthenticated remote code execution. VulnCheck canary evidence. Initial-access exploit intelligence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe synacor/zimbra collaboration suite8.8.15
  • vendor Synacor Zimbra Collaboration Suite (ZCS)version unspecified

How to fix CVE-2022-27925

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2022-27925 is in the CISA known-exploited catalog, due Sep 1, 2022. Confirm Synacor Zimbra Collaboration Suite (ZCS) against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with synacor/zimbra collaboration suite 8.8.15. Apply updates per vendor instructions.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 98.68%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 20, 2022 · Catalog

    Detected

    Synacor Zimbra Collaboration Suite (ZCS) contains flaw in the mboximport functionality, allowing an authenticated attacker to upload arbitrary files to perform remote code execution. This vulnerability was chained with CVE-2022-37042 which allows for unauthenticated remote code execution.

  2. Aug 11, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Sep 1, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Oct 1, 2026 · Catalog

    Updated

    Synacor Zimbra Collaboration Suite (ZCS) contains flaw in the mboximport functionality, allowing an authenticated attacker to upload arbitrary files to perform remote code execution. This vulnerability was chained with CVE-2022-37042 which allows for unauthenticated remote code execution.

Sources

  • CISA KEVConfirmed exploitationCVE-2022-27925

    Synacor Zimbra Collaboration Suite (ZCS) contains flaw in the mboximport functionality, allowing an authenticated attacker to upload arbitrary files to perform remote code execution. This vulnerability was chained with CVE-2022-37042 which allows for unauthenticated remote code execution.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2022-27925

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-27925

    30-day exploitation probability 98.7%

    first.org
  • Metasploit ModulesPublic exploit moduleexploit_linux/http/zimbra_mboximport_cve_2022_27925

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-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.

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/168146/Zimbra-Zip-Path-Traversal.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • VulnCheck KEVConfirmed exploitationCVE-2022-27925

    Synacor Zimbra Collaboration Suite (ZCS) contains flaw in the mboximport functionality, allowing an authenticated attacker to upload arbitrary files to perform remote code execution. This vulnerability was chained with CVE-2022-37042 which allows for unauthenticated remote code e

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.