CVE-2025-53827 (CVSS 9.1)

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.

Is your site exposed to CVE-2025-53827?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

9.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0034

Probability of exploitation

0.27%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-749 CWE-749

References

Other References

https://github.com/owncloud/security-advisories/security/advisories/GHSA-hvcx-ph66-mmvw

Frequently Asked Questions

What is CVE-2025-53827? +

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. It has a CVSS v3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2025-53827? +

CVE-2025-53827 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0034, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2025-53827? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-34114

A client-side security misconfiguration vulnerability exists in OpenBlow whistleblowing platform across multiple versions and default deployments, due to the absence …

CVE-2026-47899

The Electron preload script in Logseq exposes an API method that allows the renderer process to invoke IPC handlers without …

CVE-2022-31491 10.0

Voltronic Power ViewPower through 1.04-24215, ViewPower Pro through 2.0-22165, and PowerShield Netguard before 1.04-23292 allows a remote attacker to run …

CVE-2024-32764 9.9

A missing authentication for critical function vulnerability has been reported to affect myQNAPcloud Link. If exploited, the vulnerability could allow …

CVE-2026-55454 9.9

Appsmith is a platform to build admin panels, internal tools, and dashboards. Prior to 2.1, the bundled Caddy reverse-proxy's admin …

CVE-2024-25675 9.8

An issue was discovered in MISP before 2.4.184. A client does not need to use POST to start an export …

CVE-2025-53827