What’s Vulnerable › Vulnerabilities

CVE-2026-111163: WildMIDI through 0.5.0 Heap Out-of-Bounds Read via _WM_ParseNewHmi

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-15 · updated 2026-10-16
• Weakness: CWE-125

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 products

• Mindwerks WildMIDI: through 0.5.0

References

• https://github.com/Mindwerks/wildmidi
• https://github.com/Mindwerks/wildmidi/blob/340472ed4633d139d30c660b90eca03c1320e593/src/f_hmi.c#L268-L290
• https://hackmd.io/@haind-pwn/wildmidi-hmp-chunk-length-underflow-oob-read
• https://www.vulncheck.com/advisories/wildmidi-through-0.5.0-heap-out-of-bounds-read-via-wm-parsenewhmi
• https://hackmd.io/@haind-pwn/wildmidi-hmp-chunk-length-underflow-oob-read

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