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CVE-2026-30286 Funambol CVE debrief

CVE-2026-30286 is a critical vulnerability in Funambol Zefiro Cloud v32.0.2026011614, allowing attackers to overwrite critical internal files via the file import process, leading to arbitrary code execution or information exposure. The CVSS score for this vulnerability is 9.8, indicating a critical severity level. Organizations should prioritize patching this vulnerability to prevent potential attacks. Security teams and administrators responsible for cloud security should be aware of this vulnerability and take necessary precautions. The vulnerability is caused by an arbitrary file overwrite issue in the file import process of Funambol Zefiro Cloud v32.0.2026011614.

Vendor
Funambol
Product
Zefiro Cloud
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-03-31
Original CVE updated
2026-07-24
Advisory published
2026-03-31
Advisory updated
2026-07-24

Who should care

Organizations using Funambol Zefiro Cloud v32.0.2026011614 should prioritize patching this vulnerability to prevent potential attacks. Additionally, security teams and administrators responsible for cloud security should be aware of this vulnerability and take necessary precautions.

Technical summary

The vulnerability is caused by an arbitrary file overwrite issue in the file import process of Funambol Zefiro Cloud v32.0.2026011614. This allows attackers to overwrite critical internal files, potentially leading to arbitrary code execution or information exposure. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. The vulnerability has a CVSS score of 9.8, indicating a critical severity level.

Defensive priority

High

Recommended defensive actions

  • Apply the patch provided by the vendor to fix the arbitrary file overwrite vulnerability.
  • Restrict access to the file import process to prevent unauthorized modifications.
  • Monitor the system for suspicious activity and implement additional security measures to detect potential attacks.
  • Consider implementing compensating controls, such as web application firewalls or intrusion detection systems, to help mitigate the vulnerability.
  • Perform regular security audits and vulnerability assessments to identify and address potential issues.

Evidence notes

The CVE record was published on 2026-03-31T18:16:47.433Z and was last modified on 2026-07-24T20:10:00.147Z. The NVD entry is currently Analyzed. The evidence for this vulnerability is based on the CVE record and the NVD entry, which provide information on the vulnerability's existence, its severity, and its potential impact. The CVE record and NVD entry are official sources of information on vulnerabilities, and they provide a reliable basis for understanding the vulnerability and its implications.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-30286 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-30286

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-30286 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-30286

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.