CVE-2025-53827
Critical
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.
SeverityCritical
CVSS9.1
Exploit probability—
Product
ownCloud Core
PublishedJul 6, 2026
First seenJul 6, 2026
Weakness typeCWE-749CWE-749
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| owncloud ownCloud Core | < 10.15.3 | — |
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