Vulnerability · Published Oct 15, 2026 · Assigned by VulnCheck
CVE-2026-111161libADLMIDI 1.6.2 through 1.6.2.1 Stack Out-of-Bounds Write via BW_MidiSequencer noteStates
Medium 6.1
In plain English
A medium-severity out-of-bounds write in libADLMIDI from Wohlstand. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.2%top 90.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Wohlstand | libADLMIDI | 1.6.2 – through 1.6.2.1 |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
References
- https://hackmd.io/@haind-pwn/libadlmidi-notestates-note-index-stack-oob technical-description
- https://github.com/Wohlstand/libADLMIDI/blob/99c5e03a5cf9b4fdf35b53efddb853c96320d50f/src/midiseq/impl/read_smf_impl.hpp#L113 technical-description
- https://github.com/Wohlstand/libADLMIDI/blob/99c5e03a5cf9b4fdf35b53efddb853c96320d50f/src/midiseq/impl/miditrack_impl.hpp#L350-L357 technical-description
- https://github.com/Wohlstand/libADLMIDI product
- VulnCheck Advisory: libADLMIDI 1.6.2 through 1.6.2.1 Stack Out-of-Bounds Write via BW_MidiSequencer noteStates third-party-advisory