TI-2025-33719 Aliases CVE-2025-53827

ownCloud Core: Updater has an exposed dangerous method or function

MEDIUM 42CWE-749Published 2026-07-06 · Updated 2026-07-08

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00615 49th percentileScored 2026-11-07

Fix Fixed ownCloud Core (owncloud): 10.15.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
ownCloud	ownCloud Core	before 10.15.3	10.15.3	Patch available	CNA

ownCloud Core VendorownCloud Affected before 10.15.3 Fixed in 10.15.3 Patch available CNA

Remediation

Fix · CNA ownCloud Core (owncloud) Fixed in 10.15.3

Timeline

2026-10-02 Threatist record created from CVE-2025-53827

References

Other 1

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

TI-2023-26770 An issue was discovered in ownCloud owncloud/core before 10.13.1. KEVCVSS 3.1CRITICAL 9.8
TI-2023-26768 An issue was discovered in ownCloud owncloud/graphapi 0.2.x before 0.2.1 and 0.3.x before… KEVCVSS 3.1CRITICAL 10.0
TI-2019-15391 OwnCloud 8.1.8 - Username Disclosure CVSS 4.0MEDIUM 5.3
TI-2015-03941 Directory traversal vulnerability in the routing component in ownCloud Server before… CVSS 2.0HIGH 10.0
TI-2025-37176 ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the… CVSS 3.1MEDIUM 5.3
TI-2023-09745 ownCloud Android app vulnerable to SQL Injection CVSS 3.1MEDIUM 6.2

See all 172 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences