CVE-2025-55204

Name: CVE-2025-55204
Creator: NVD / NIST
Published: 2026-01-05T18:15:42.987+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.6/10EPSS 0.60%

Last modified Jun 17, 2026

CVE-2025-55204 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. 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. EPSS estimates a 0.60% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Probability

0.60%

44.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Muffon	Muffon	< 2.3.0

References

https://drive.google.com/file/d/1eCPCQ6leuVM_vecfofFv04c0t9isCBqR/view?usp=sharingExploit
https://github.com/staniel359/muffon/releases/tag/v2.3.0Product, Release Notes
https://github.com/staniel359/muffon/security/advisories/GHSA-gc3f-gqph-522qExploit, Third Party Advisory

Timeline

Published: Jan 5, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-55204?

How severe is CVE-2025-55204?

CVE-2025-55204 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 0.60% probability of exploitation in the next 30 days.

How do I fix CVE-2025-55204?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-55204?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST