CVE-2026-121941
7.8 HIGHpublic exploit availablePublished 2026-11-04 · Updated 2026-11-04
AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.
NVD description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-122
Public exploit & PoC references
All references
- https://github.com/munt/munt/blob/libmt32emu_2_8_3/mt32emu/src/MidiStreamParser.cpp#L223-L257
- https://github.com/munt/munt/commit/1749f7fed5cdb3a9015acce076a1512b1615dc3b
- https://github.com/munt/munt/issues/149
- https://hackmd.io/@haindpwn/munt-midistreamparser-oversized-sysex-heap-overflow
- https://www.vulncheck.com/advisories/libmt32emu-before-2.8.4-heap-buffer-overflow-via-midistreamparserimpl-parsesysex
- https://hackmd.io/@haindpwn/cve-2026-121941-munt-midistreamparser-oversized-sysex-heap-overflow
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
Related CVEs
- CRITICALCVE-2016-15059PoC
- CRITICALCVE-2017-20241
- LOWCVE-2025-1218PoC
- MEDIUMCVE-2025-60480PoC
- MEDIUMCVE-2025-60490PoC
- HIGHCVE-2025-71436PoC
- HIGHCVE-2026-100201
- HIGHCVE-2026-100203
Related by shared AI tags and CWE weakness class. Browse the full archive.