CVE-2025-53827: CWE-749: Exposed Dangerous Method or Function in owncloud ownCloud Core
ownCloud Core is the server-side component of the file storage, synchronization, and sharing application ownCloud Classic. In versions prior to 10.15.3, the Updater on ownCloud 10 before 10.15.3 has an exposed dangerous method or function. Attackers with administrative privileges may leverage functionality to execute arbitrary code. This issue has been fixed in version 10.15.3.
AI Analysis
Technical Summary
ownCloud Core, the server-side component of the ownCloud Classic file storage and sharing application, contains a critical vulnerability identified as CVE-2025-53827. In versions before 10.15.3, the Updater exposes a dangerous method or function that allows attackers with administrative privileges to execute arbitrary code. This vulnerability is classified under CWE-749 (Exposed Dangerous Method or Function). The vulnerability has been addressed and fixed in ownCloud Core version 10.15.3.
Potential Impact
Successful exploitation requires administrative privileges and can lead to arbitrary code execution, resulting in complete compromise of the affected ownCloud Core server. The vulnerability impacts confidentiality, integrity, and availability of the system as indicated by the CVSS vector (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).
Mitigation Recommendations
Upgrade ownCloud Core to version 10.15.3 or later, where this vulnerability has been fixed. No other official remediation or temporary fixes are documented. Since this is not a cloud service, patching must be applied by the system administrator.
CVE-2025-53827: CWE-749: Exposed Dangerous Method or Function in owncloud ownCloud Core
Description
ownCloud Core is the server-side component of the file storage, synchronization, and sharing application ownCloud Classic. In versions prior to 10.15.3, the Updater on ownCloud 10 before 10.15.3 has an exposed dangerous method or function. Attackers with administrative privileges may leverage functionality to execute arbitrary code. This issue has been fixed in version 10.15.3.
CVSS v3.1
Score 9.1critical
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
ownCloud Core, the server-side component of the ownCloud Classic file storage and sharing application, contains a critical vulnerability identified as CVE-2025-53827. In versions before 10.15.3, the Updater exposes a dangerous method or function that allows attackers with administrative privileges to execute arbitrary code. This vulnerability is classified under CWE-749 (Exposed Dangerous Method or Function). The vulnerability has been addressed and fixed in ownCloud Core version 10.15.3.
Potential Impact
Successful exploitation requires administrative privileges and can lead to arbitrary code execution, resulting in complete compromise of the affected ownCloud Core server. The vulnerability impacts confidentiality, integrity, and availability of the system as indicated by the CVSS vector (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).
Mitigation Recommendations
Upgrade ownCloud Core to version 10.15.3 or later, where this vulnerability has been fixed. No other official remediation or temporary fixes are documented. Since this is not a cloud service, patching must be applied by the system administrator.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2025-07-09T14:14:52.530Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4bcbb327e9c79719c0ceb3
Added to database: 07/06/2026, 15:37:23 UTC
Last enriched: 07/14/2026, 08:51:40 UTC
Last updated: 08/21/2026, 10:52:07 UTC
Views: 95
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.