CVE-2025-53829
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 · uneditedownCloud is a file storage, synchronization, and sharing application. In ownCloud 10 prior to version 10.15.3, an attacker with administrative privileges can exploit a path traversal vulnerability in the system to execute arbitrary code. Upgrade ownCloud 10 to version 10.15.3 or later to receive a patch.
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 · high confidenceownCloud 10 prior to version 10.15.3 contains a path traversal vulnerability that allows authenticated administrators to achieve arbitrary code execution on the server. The vulnerability resides in the file storage system's handling of file paths, enabling escape beyond intended directory boundaries.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- High
- Privileges
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/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.
-
Identify ownCloud installationLook for ownCloud web application directories (commonly in /var/www/owncloud, /var/www/html/owncloud, or similar web root paths). Check for ownCloud config.php or config/config.php files.Affected if ownCloud software is present on the system
-
Determine installed ownCloud versionOpen ownCloud config/config.php file and look for the 'version' entry, or access the ownCloud admin panel and navigate to Settings > About to view the version number.Affected if Version displayed is less than 10.15.3 (e.g., 10.15.2, 10.14.0, etc.)
-
Verify ownCloud 10 product lineConfirm the installed product is ownCloud 10 (not ownCloud Infinite Scale or older ownCloud 9.x). Check the config.php 'productname' or examine the installation directory structure.Affected if Product is ownCloud 10 and version is below 10.15.3
-
Confirm admin account existsCheck if any administrator accounts are configured in ownCloud (users in the 'admin' group or users with admin privileges listed in oc_preferences or oc_users).Affected if At least one administrator account is configured and accessible
You are affected if ownCloud 10 is installed with a version lower than 10.15.3 and administrator accounts can be accessed, since the path traversal requires authenticated admin privileges to achieve code execution.
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.
dbcve · scopedUpgrade ownCloud 10 to version 10.15.3 or later to receive the patch for this path traversal vulnerability.
ownCloud 10.15.3
- 1. Back up your current ownCloud 10 installation and database
- 2. Download ownCloud 10.15.3 or later from the official ownCloud downloads page
- 3. Extract the new version files to your server
- 4. Run the upgrade command or navigate to ownCloud in a web browser to complete the upgrade process
- 5. Verify the installation by logging in and checking the version number
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation3.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-53829 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
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-2025-53829 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data