CVE-2026-111162
MediumCVSS 6.1Summary
WildMIDI through 0.5.0 contains a heap out-of-bounds read vulnerability in the HMP parser _WM_ParseNewHmp() that allows attackers to read beyond buffers via underflowed chunk lengths. Attackers can supply a crafted .hmp file with a chunk length of 0-12 that wraps to roughly 4 GB, crashing applications or exposing heap bytes through WildMidi_GetInfo().
Risk Assessment
The vulnerability can lead to application crashes (denial of service) and heap data leakage, potentially exposing sensitive information. The risk affects systems processing untrusted MIDI/HMP files.
Recommendation
Update WildMIDI to a version newer than 0.5.0 if available, or avoid processing untrusted .hmp files. Consider implementing chunk length validation before parsing.
Other vulnerabilities in WildMIDI
See all- CVE-2026-111163Medium
WildMIDI through 0.5.0 contains a heap out-of-bounds read vulnerability in _WM_ParseNewHmi() in src/f_hmi.c that reads past buffers when handling 0xfe sub-events. Attackers can supply a crafted HMI file placing a 0xfe 0x10 sub-event near the buffer end to read up to four bytes past the allocation, crashing the decoding application.
- CVE-2017-11662High
The _WM_ParseNewMidi function in f_midi.c in WildMIDI 0.4.2 can lead to denial of service through invalid memory read and application crash when processing a crafted mid file.
- CVE-2017-11661High
The _WM_SetupMidiEvent function in internal_midi.c in WildMIDI 0.4.2 can lead to denial of service through invalid memory reads and application crashes when processing a crafted MIDI file.
Original NVD description (English source)
WildMIDI through 0.5.0 contains a heap out-of-bounds read vulnerability in the HMP parser _WM_ParseNewHmp() that allows attackers to read beyond buffers via underflowed chunk lengths. Attackers can supply a crafted .hmp file with a chunk length of 0-12 that wraps to roughly 4 GB, crashing applications or exposing heap bytes through WildMidi_GetInfo().
Vulnerability data from NVD (NIST) · CISA KEV · EPSS