{"id":"EM-20261104-ROTC","url":"https://cyber.eventmonitor.net/incident/EM-20261104-ROTC/libmt32emu-vulnerability-cve-2026-121941/","type":"cve","title":"libmt32emu Vulnerability (CVE-2026-121941)","subtitle":"CVE-2026-121941","subject":"CVE-2026-121941","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-04T13:17:28.560Z","firstSignal":"2026-11-04T12:31:19.000Z","lastSignal":"2026-11-04T13:17:28.560Z","updated":"2026-11-06T00:58:29.349Z","revision":1,"life":[{"status":"Born","at":"2026-11-04T13:17:28.560Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-04T13:17:28.560Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-04T12:31:19.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-04T13:17:28.560Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261104-ROTC created."}],"stages":[{"name":"Disclosed","at":"2026-11-04T13:17:28.560Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-04T13:17:28.560Z","detail":"CVSS 8.5 · EPSS 0.3%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-04T12:31:19.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-04T12:31:19.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-121941 (important)","text":"libmt32emu: libmt32emu: arbitrary code execution via oversized SysEx messages","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-121941.json"},{"at":"2026-11-04T13:17:28.560Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-121941 (CVSS 8.5)","text":"libmt32emu before 2.8.4 contains a heap buffer overflow vulnerability in MidiStreamParserImpl::parseSysex that allows attackers to write past a heap allocation by supplying oversized unterminated SysEx messages. Attackers can feed more than 32768 SysEx data bytes through the mt32emu_parse_stream API via MIDI files, ports, or sequencer clients to corrupt heap memory and crash the application.","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121941"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-04T13:17:28.560","score":8.5,"severity":"HIGH","desc":"libmt32emu before 2.8.4 contains a heap buffer overflow vulnerability in MidiStreamParserImpl::parseSysex that allows attackers to write past a heap allocation by supplying oversized unterminated SysEx messages. Attackers can feed more than 32768 SysEx data bytes through the mt32emu_parse_stream API","product":"","seen":1793837141981},"kev":null,"epss":{"epss":0.0026,"pct":0.17848,"at":1793926709349},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}