SB2025120555 - Insufficient Logging in Nextcloud Server and Enterprise server
Published: December 5, 2025
Security Bulletin ID
SB2025120555
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Insufficient Logging (CVE-ID: CVE-2025-66552)
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.
Remediation
Install update from vendor's website.