Main Vulnerability Database Vulnerabilities #VU119229

Insufficient Logging in Nextcloud Enterprise Server and Nextcloud Server - CVE-2025-66552

Published: December 5, 2025

Vulnerability identifier: #VU119229

CSH Severity: Medium

CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-66552

CWE-ID: CWE-778

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the admin_audit does not log all actions on files in groupfolders. A remote user can perform a denial of service (DoS) attack.

Affected software

Nextcloud Enterprise Server
Nextcloud Server

How to mitigate CVE-2025-66552

Install updates from vendor's website.

Nextcloud Enterprise Server - addressed in versions 30.0.9, 31.0.1
Nextcloud Server - addressed in versions 30.0.9, 31.0.1

External References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-ww9m-f8j4-jj9x

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