Twonky Server - Improper Access Control (CVE-2025-13315)

CVE-2025-13315 is a critical access control vulnerability in Twonky Server 8.5.2 for Linux and Windows, allowing unauthenticated attackers to bypass API authentication and access sensitive log files. This exposure can lead to the disclosure of the administrator's username and encrypted password, potentially enabling further compromise of the server.

CrowdSec has been tracking this vulnerability and its exploits since 10th of December 2025.

According to CrowdSec data, while opportunistic exploitation dominates, a portion of threat actors trying to exploit CVE-2025-13315 apply basic targeting methods such as port or service detection. This indicates emerging patterns of selective targeting. Telemetry from the CrowdSec network also shows that exploitation activity for CVE-2025-13315 remains steady week-over-week. Attack volumes are consistent with long-term trends, indicating sustained interest from threat actors. CVE-2025-13315 continues to be an active part of the threat landscape and will likely remain this way for the forseeable future.

Attackers exploit unauthenticated access to the /nmc/rpc/log_getfile endpoint to retrieve Twonky Server log files, exposing administrator usernames and encrypted passwords.