CVE-2026-111161: libADLMIDI 1.6.2 through 1.6.2.1 Stack Out-of-Bounds Write via BW_MidiSequencer noteStates

Severity: medium (CVSS 6.1 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-787

Description

libADLMIDI 1.6.2 through 1.6.2.1 contains an off-by-one stack out-of-bounds write vulnerability in BW_MidiSequencer that allows attackers to corrupt stack memory via crafted MIDI files. Attackers can supply a MIDI file with a note-on using status 0x9F and note 0x7F through adl_openFile() or adl_openData() to crash the hosting media player or game engine.

Affected products

Wohlstand libADLMIDI: from 1.6.2 through 1.6.2.1

References

https://github.com/Wohlstand/libADLMIDI
https://github.com/Wohlstand/libADLMIDI/blob/99c5e03a5cf9b4fdf35b53efddb853c96320d50f/src/midiseq/impl/miditrack_impl.hpp#L350-L357
https://github.com/Wohlstand/libADLMIDI/blob/99c5e03a5cf9b4fdf35b53efddb853c96320d50f/src/midiseq/impl/read_smf_impl.hpp#L113
https://hackmd.io/@haind-pwn/libadlmidi-notestates-note-index-stack-oob
https://www.vulncheck.com/advisories/libadlmidi-1.6.2-through-1.6.2.1-stack-out-of-bounds-write-via-bw-midisequencer-notestates
https://hackmd.io/@haind-pwn/libadlmidi-notestates-note-index-stack-oob

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