CVE-2026-111271mediumCWE-125

CVE-2026-111271: medium-severity vulnerability in Konstanty Bialkowski libmodplug

libmodplug through 0.8.9.1 Heap Out-of-Bounds Read via CSoundFile::ReadAMS2

Published · Updated

Follow this CVE+ Monitor libmodplug+ Monitor libmodplug

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.8epss 0.2%
libmodplug through 0.8.9.1 contains a heap-based out-of-bounds read vulnerability in CSoundFile::ReadAMS2() in src/load_ams.cpp that allows attackers to read adjacent heap memory via crafted AMS files. Attackers can supply an AMS module whose pattern effect bytes keep bit 7 set, driving the decoder past the input buffer and crashing any libmodplug consumer.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
Konstanty Bialkowski · libmodplug
Related CVEs — Konstanty Bialkowski libmodplug

In the same product, most dangerous first.

CVE-2026-108577MEDIUMKonstanty Bialkowski libmodplug ABC Music Format load_abc.cpp abc_add_gchord resource consumptionEPSS 0.3%CVE-2026-111270MEDIUMlibmodplug through 0.8.9.1 Heap Out-of-Bounds Write via CSoundFile::ReadDSMEPSS 0.2%CVE-2026-75904MEDIUMlibmodplug <= 0.8.9.1 - Out-of-Bounds Read in pat_smplooped via Crafted MIDI FileEPSS 0.2%