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TI-2026-74947 Aliases CVE-2026-111163

Heap out-of-bounds read in WildMIDI HMI parsing

Priority MEDIUM 63CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

WildMIDI through 0.5.0 contains a heap out-of-bounds read (CWE-125) in _WM_ParseNewHmi() in src/f_hmi.c, which reads past buffers when handling 0xfe sub-events. An attacker who supplies a crafted HMI file can make the decoder read up to four bytes past an allocation, which crashes the decoding application.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00195 9th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MindwerksWildMIDIup to 0.5.0—No fix listedCNA
  • WildMIDI VendorMindwerks Affected up to 0.5.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for WildMIDI.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-111163
  2. 2026-10-18 Affected versions changed · Red Hat
  3. 2026-10-18 CVSS score added · Red Hat

References

Other 3

  • TI-2017-08633 The _WM_SetupMidiEvent function in internal_midi.c:2318 in WildMIDI 0.4.2 can cause a… CVSS 3.0HIGH 7.5
  • TI-2017-08634 The _WM_ParseNewMidi function in f_midi.c in WildMIDI 0.4.2 can cause a denial of service… CVSS 3.0HIGH 7.5
  • TI-2017-08636 The _WM_SetupMidiEvent function in internal_midi.c:2122 in WildMIDI 0.4.2 can cause a… CVSS 3.1MEDIUM 6.5
  • TI-2017-14637 The WildMidi_Open function in WildMIDI since commit… CVSS 3.0HIGH 7.8
  • TI-2017-08635 The _WM_SetupMidiEvent function in internal_midi.c:2315 in WildMIDI 0.4.2 can cause a… CVSS 3.0MEDIUM 6.5
  • TI-2026-74946 Heap out-of-bounds read in WildMIDI HMP parser CVSS 4.0MEDIUM 6.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences