FluidSynth is an open-source software synthesizer library used to render MIDI-based audio, commonly integrated into music applications such as MuseScore for playback.
Overview
FluidSynth is an open-source software synthesizer library used to render MIDI-based audio, commonly integrated into music applications such as MuseScore for playback. A CVE-2025 DoS vulnerability in FluidSynth has been disclosed, with patches tied to MuseScore updates; Fedora advisories for Fedora 42 and 43 indicate fixes are available, highlighting the need to apply updates to avoid playback disruptions and denial-of-service conditions.
Related Threat Clusters
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Fedora Patches MuseScore for CVE-2025 Vulnerabilities
Fedora has released patches for MuseScore to address CVE-2025-56225, a vulnerability affecting the bundled version of the software. This flaw could potentially lead to denial of service (DoS) issues in the FluidSynth…
2 articles · Updated January 18, 2026
Recent Intelligence Reports
- Fedora 42: MuseScore Patch for CVE-2025 — Linuxsecurity · January 18, 2026
- Fedora 43: MuseScore Critical FluidSynth DoS CVE-2025 — Linuxsecurity · January 12, 2026