Insufficient Logging in Nextcloud Server and Nextcloud Enterprise Server - CVE-2025-66552
Published: December 5, 2025
Vulnerability identifier: #VU119229
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2025-66552
CWE-ID: CWE-778
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Nextcloud
Affected software:
Nextcloud Server
Nextcloud Enterprise Server
Nextcloud Server
Nextcloud Enterprise Server
Detailed vulnerability description
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.
How to mitigate CVE-2025-66552
Install updates from vendor's website.