Mindwerks WildMIDI up to 0.5.0 HMI Sub-event src/f_hmi.c _WM_ParseNewHmi out-of-bounds

Summaryinfo

A vulnerability, which was classified as critical, was found in Mindwerks WildMIDI up to 0.5.0. The impacted element is the function _WM_ParseNewHmi of the file src/f_hmi.c of the component HMI Sub-event Handler. Executing a manipulation can lead to out-of-bounds. This vulnerability is handled as CVE-2026-111163. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Mindwerks WildMIDI up to 0.5.0. It has been declared as critical. This vulnerability affects the function _WM_ParseNewHmi of the file src/f_hmi.c of the component HMI Sub-event Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at hackmd.io. This vulnerability was named CVE-2026-111163 since 10/15/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/15/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Mindwerks

Name

• WildMIDI

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5.0

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