{"id":"CVE-2026-61714","revision":"bbc5ff9d90284b5da3e8fe666e828c7f","records":[{"revision":"bbc5ff9d90284b5da3e8fe666e828c7f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-61714","aliases":[],"title":"FluidSynth: Heap Buffer Overflow in MIDI Player","description":"FluidSynth is a software synthesizer based on the SoundFont 2 specifications. From 2.2.4 until 2.5.6, configuring synth.midi-channels above 16 allows the MIDI player to index _fluid_player_t::channel_isplaying outside its fixed-size heap allocation while tracking active channels. The resulting out-of-bounds reads and writes invoke undefined behavior and may compromise confidentiality, integrity, or availability. No crafted MIDI file is required because the unsafe condition is created by the channel-count configuration itself. Keeping synth.midi-channels at its default value of 16 avoids the vulnerable path. This issue is fixed in version 2.5.6.","state":0,"publishedAt":"2026-09-18T20:01:14.342+00:00","modifiedAt":"2026-09-25T16:13:08.897+00:00","affected":[{"ecosystem":"Vendor product","name":"fluidsynth","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"FluidSynth\",\n                    \"product\": \"fluidsynth\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 2.2.4, < 2.5.6\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://github.com/FluidSynth/fluidsynth/security/advisories/GHSA-976m-35rw-h3m6","https://github.com/FluidSynth/fluidsynth/commit/772702e00cc6acc7c607efb40283e2269211effc","https://github.com/FluidSynth/fluidsynth/releases/tag/v2.5.6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-61714","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-61714","identifiers":["CVE-2026-61714"]},"retained":false,"historicalAffected":[]}],"coverage":[]}