PT-2026-136961

CVE-2026-121941

·

Published

2026-11-04

·

Updated

2026-11-04

Description by

CVSS 3.1
7.8
High
MetricsAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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.
Exploitability
Fix
Impacts
Researchers
Vendors
Affected products
Weakness enumeration
CWE-122: Heap-based Buffer Overflow
Related identifiers
CVE-2026-121941
Found an issue in the description? Have something to add? Feel free to write us 👾
dbugs@ptsecurity.com