HIGHCVSS v3.1 7.8Vulnerability
CVE-2026-121941
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.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-11-04T13:33:26.764955+00:00
- Cvss severity
- HIGH
- Cvss score
- 7.8
- Retrieved at
- 2026-11-04T13:34:19+00:00
- Score
- 7.8
- Cvss version
- 3.1
- Last source
- NVD
- Cve id
- CVE-2026-121941
- Cvss vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- First seen by Signal
- 2026-11-04T13:34:19+00:00
- Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published at
- 2026-11-04T13:17:28.560
- Last modified
- 2026-11-04T13:17:28.560
Related Entities (1)
HAS_WEAKNESS (1)
Explore deeper with Ninja Signal's threat intelligence graph