CVE-2026-111162
WildMIDI through 0.5.0 Heap Out-of-Bounds Read via _WM_ParseNewHmp
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
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().
| CWE | CWE-125 |
| Vendor | mindwerks |
| Product | wildmidi |
| Published | Oct 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Affected Versions
Mindwerks / WildMIDI
0 ≤ 0.5.0
References
hackmd.io: https://hackmd.io/@haind-pwn/wildmidi-hmp-chunk-length-underflow-oob-read github.com: https://github.com/Mindwerks/wildmidi/blob/340472ed4633d139d30c660b90eca03c1320e593/src/f_hmp.c#L258-L261 github.com: https://github.com/Mindwerks/wildmidi/blob/340472ed4633d139d30c660b90eca03c1320e593/src/internal_midi.c#L2166-L2172 github.com: https://github.com/Mindwerks/wildmidi vulncheck.com: https://www.vulncheck.com/advisories/wildmidi-through-0.5.0-heap-out-of-bounds-read-via-wm-parsenewhmp
Credits
HaiND from the Post and Telecommunication Institute of Technology