Vulnerability · Published Oct 15, 2026 · Assigned by VulnCheck
CVE-2026-111163WildMIDI through 0.5.0 Heap Out-of-Bounds Read via _WM_ParseNewHmi
Medium 5.5
In plain English
A medium-severity out-of-bounds read in WildMIDI from Mindwerks. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.2%top 90.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | wildmidi | no fix listed | DEBIAN-CVE-2026-111163 |
| Debian:13 | wildmidi | no fix listed | DEBIAN-CVE-2026-111163 |
| Debian:14 | wildmidi | no fix listed | DEBIAN-CVE-2026-111163 |
| Ubuntu:22.04:LTS | wildmidi | no fix listed | UBUNTU-CVE-2026-111163 |
| Ubuntu:24.04:LTS | wildmidi | no fix listed | UBUNTU-CVE-2026-111163 |
| Ubuntu:26.04:LTS | wildmidi | no fix listed | UBUNTU-CVE-2026-111163 |
| Ubuntu:26.10 | wildmidi | no fix listed | UBUNTU-CVE-2026-111163 |
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
- https://hackmd.io/@haind-pwn/wildmidi-hmp-chunk-length-underflow-oob-read technical-description
- https://github.com/Mindwerks/wildmidi/blob/340472ed4633d139d30c660b90eca03c1320e593/src/f_hmi.c#L268-L290 technical-description
- https://github.com/Mindwerks/wildmidi product
- VulnCheck Advisory: WildMIDI through 0.5.0 Heap Out-of-Bounds Read via _WM_ParseNewHmi third-party-advisory