Vulnerability Details CVE-2025-55204
muffon is a cross-platform music streaming client for desktop. Versions prior to 2.3.0 have a one-click Remote Code Execution (RCE) vulnerability in. An attacker can exploit this issue by embedding a specially crafted `muffon://` link on any website they control. When a victim visits the site or clicks the link, the browser triggers Muffon’s custom URL handler, causing the application to launch and process the URL. This leads to RCE on the victim's machine without further interaction. Version 2.3.0 patches the issue.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 38.8%
CVSS Severity
CVSS v3 Score 8.8
References