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

0.0036

Probability of exploitation

0.29%

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 0.0036, 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-2026-96430

Exposed Dangerous Method or Function in the /WebAgenda/SQLWin.do API endpoint of Flowring Agentflow 4.0 version Before 2026/08/28 allows remote authenticated …

CVE-2026-54702

Markdown Preview Enhanced is a Markdown preview extension for Visual Studio Code. Prior to 0.8.30, the webview message handler in …

CVE-2026-75810

Exposed Dangerous Method or Function in ASUS Armoury Crate allow a local user to cause a brief system stall by …

CVE-2026-61793

Nuxt OG Image generates OG Images with Vue templates in Nuxt. From 6.0.2 until 6.7.0, nuxt-og-image exposes the unauthenticated /_og/d/** …

CVE-2026-105848

Payload is a free and open source headless content management system. In @payloadcms/plugin-stripe versions before 3.90.0 and canary versions before …

CVE-2026-92612

In Eclipse iceoryx2 versions greater than v0.8.0, the StaticString exposes its contents as mutable bytes through safe APIs, while String::as_str() …

CVE-2025-53827