CVE-2026-58264 (GCVE-0-2026-58264)
Vulnerability from cvelistv5
Published
2026-09-18 19:59
Modified
2026-09-21 20:47
Severity ?
CWE
  • CWE-122 - Heap-based Buffer Overflow
Summary
FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From 1.1.2 until 2.5.6, the FluidSynth command handler accepts a pitch_bend_range command whose channel argument is not bounds checked before the supplied value is written through the selected synth channel. An out-of-range channel can therefore cause an out-of-bounds heap write, leading to denial of service or possible code execution. The issue is remotely reachable when the TCP server is enabled through new_fluid_server() or fluidsynth -s, and it is locally reachable through malicious commands delivered to the FluidSynth shell on standard input. Applications that do not use the shell, command handler, or TCP server are not affected. This issue is fixed in version 2.5.6.
Impacted products
Vendor Product Version
FluidSynth fluidsynth Version: >= 1.1.2, < 2.5.6
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Show details on NVD website


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