Description
An arbitrary file overwrite vulnerability in Funambol, Inc. Zefiro Cloud v32.0.2026011614 allows attackers to overwrite critical internal files via the file import process, leading to arbitrary code execution or information exposure.
Published: 2026-03-31
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution
Action: Patch Immediately
AI Analysis

Impact

The vulnerability is an arbitrary file overwrite in Funambol Zefiro Cloud version 32.0.2026011614, allowing an attacker to overwrite critical internal files through the file import process. This flaw can lead to arbitrary code execution or sensitive data exposure, classified as CWE‑22.

Affected Systems

Affected system is Funambol Zefiro Cloud version 32.0.2026011614. No other versions are specified in the data.

Risk and Exploitability

The flaw carries a CVSS score of 9.8, placing it in the critical severity range. The EPSS score is below 1 %, indicating a low current likelihood of exploitation. The likely attack vector is via the file import interface, which may be exposed over the network; this is inferred from the fact that the file import process is mentioned as the mechanism for the overwrite. The issue is not listed in the CISA KEV catalog. Successful exploitation would allow an attacker to gain code execution or disclose information.

Generated by OpenCVE AI on April 3, 2026 at 22:31 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the vendor’s latest patch for Funambol Zefiro Cloud or upgrade to a version that has removed the vulnerable import functionality.
  • If an upgrade is not immediately possible, restrict the file import feature to a single trusted user or disable it entirely.
  • Limit access to the import endpoint by using network segmentation or firewall rules to prevent unauthorized users from uploading files.
  • Enable logging of file upload activity and monitor for abnormal patterns that could indicate exploitation attempts.

Generated by OpenCVE AI on April 3, 2026 at 22:31 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 07 Apr 2026 08:00:00 +0000

Type Values Removed Values Added
Title Arbitrary File Overwrite in Funambol Zefiro Leads to Remote Code Execution

Fri, 03 Apr 2026 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Funambol zefiro
CPEs cpe:2.3:a:funambol:zefiro:32.0.2026011614:*:*:*:*:*:*:*
Vendors & Products Funambol zefiro

Fri, 03 Apr 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Funambol
Funambol zefiro Cloud
Vendors & Products Funambol
Funambol zefiro Cloud

Thu, 02 Apr 2026 20:30:00 +0000

Type Values Removed Values Added
Title File Import Write Overwrite Leading to Remote Code Execution
Weaknesses CWE-434

Thu, 02 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 01 Apr 2026 02:15:00 +0000

Type Values Removed Values Added
Title File Import Write Overwrite Leading to Remote Code Execution
Weaknesses CWE-22
CWE-434

Tue, 31 Mar 2026 18:15:00 +0000

Type Values Removed Values Added
Description An arbitrary file overwrite vulnerability in Funambol, Inc. Zefiro Cloud v32.0.2026011614 allows attackers to overwrite critical internal files via the file import process, leading to arbitrary code execution or information exposure.
References

Subscriptions

Funambol Zefiro Zefiro Cloud
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-04-02T14:27:23.319Z

Reserved: 2026-03-04T00:00:00.000Z

Link: CVE-2026-30286

cve-icon Vulnrichment

Updated: 2026-04-02T14:27:12.859Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-31T18:16:47.433

Modified: 2026-04-03T18:26:13.020

Link: CVE-2026-30286

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-07T08:08:21Z

Weaknesses