CVE-2026-30286
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAn 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceAn arbitrary file overwrite vulnerability exists in Funambol Zefiro Cloud v32.0.2026011614's file import process, allowing attackers to overwrite critical internal files. This can lead to arbitrary code execution or information exposure.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 32.0.2026011614CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Funambol Zefiro versionLocate and retrieve the installed Funambol Zefiro version number from the application system (typically found in application metadata, about page, or version file)Affected if The installed version is exactly 32.0.2026011614
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Confirm file import module is accessibleVerify that the file import functionality is available and enabled in the Funambol Zefiro installation (check module status or admin configuration)Affected if The file import feature is present and enabled in the environment
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Review file import access controlsExamine the access control configuration for the file import functionality to determine if it is exposed to unauthorized usersAffected if The file import function is accessible to users who should not have file upload/import privileges
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Check file import directory permissionsInspect the directory permissions where file imports are processed to see if the application can write to locations outside the intended import directoryAffected if The file import process permits writes to directories outside the designated import area (indicating path validation is missing)
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Inspect critical internal files for modificationsCompare current state of internal configuration files, scripts, or executables in the Funambol installation against known good baselines if availableAffected if Any critical internal files show unexpected modifications that could indicate exploitation of the file overwrite vulnerability
Environment is affected if Funambol Zefiro version 32.0.2026011614 is installed AND the file import functionality is accessible and lacks proper path validation controls.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement strict input validation on the file import function to prevent path traversal, restrict write access to allowed directories, enforce authentication/authorization on file uploads, and validate file content against expected types.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,968.
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-30286 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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