{"apiVersion":"1.0","identifier":"CVE-2026-75904","description":"libmodplug through 0.8.9.1 contains an out-of-bounds read in pat_smplooped in src/load_pat.cpp. The function validates only the upper bound of its sample index against MAXSMP and then subtracts one before indexing the 191-byte static array pat_loops, so an index of zero reads pat_loops[-1], one byte before the array. The index is the smpno field of a parsed MIDI event, which is initialised to zero and only later overwritten from a program-change parameter, so an event reaching the note test before an instrument is assigned carries zero. A 32-byte MIDI file supplied to the library-s public ModPlug_Load entry point drives the path through CSoundFile::Create, CSoundFile::ReadMID, and MID_ReadPatterns to the read. The byte read out of bounds determines whether a note event is treated as looping, so adjacent static storage influences playback state.","publishedAt":"2026-08-18T16:18:22","lastModifiedAt":"2026-08-18T16:18:22","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-75904","cvssScore":3.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","epssProbability":0.00119,"riskScore":0.33,"affectedProduct":"libmodplug","affectedVersions":"<=0.8.9.1","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-75904","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-75904","en":"https://www.redsauce.net/en/cves/CVE-2026-75904","fr":"https://www.redsauce.net/fr/cves/CVE-2026-75904","pt":"https://www.redsauce.net/pt/cves/CVE-2026-75904","de":"https://www.redsauce.net/de/cves/CVE-2026-75904","sk":"https://www.redsauce.net/sk/cves/CVE-2026-75904","el":"https://www.redsauce.net/el/cves/CVE-2026-75904"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-75904"}}