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Vulnerabilities

Security incident · CVE-2025-55204

muffon is a cross-platform music streaming client for desktop.

Published Jan 5, 2026 · catalog updated Jan 5, 2026 · muffon is a cross-platform

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-55204. EPSS is 0.71%. Act only if a listed version of muffon is a cross-platform is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (muffon is a cross-platform).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.71%
Remediation
Version ranges on file
Affected products
vendor staniel359 muffon < 2.3.0

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 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor staniel359 muffon < 2.3.0< 2.3.0

How to fix CVE-2025-55204

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-55204. EPSS is 0.71%. Act only if a listed version of muffon is a cross-platform is installed.

Which versions are affected?

Compare what you have installed with staniel359 muffon < 2.3.0 < 2.3.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.71%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 5, 2026 · EUVD

    Detected

    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 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 th

  2. Jan 5, 2026 · EUVD

    Updated

    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 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 th

Sources

  • CVE.orgVulnerability recordCVE-2025-55204

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-55204

    30-day exploitation probability 0.71%

    first.org
  • EUVDVulnerability recordEUVD-2025-206240

    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 link on any website they control. When a victim visits the sit

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • CVE.orgOct 31, 2026
  • EUVDOct 31, 2026