CVE-2026-116731
MEDIUM
NVD
CVSS Score
6.1
Severity
MEDIUM
Published
Oct 26, 2026
Vendor
unknown
Description
Furnace through 0.6.8.3 contains an out-of-bounds write vulnerability in DivEngine::loadFTM() that allows attackers to corrupt heap memory via an unchecked subsong index in the GROOVES block. Attackers can craft a FamiTracker module with a subsong count of 2 or more to write a groove pattern past the subsong vector, crashing Furnace when opened.
References
- https://github.com/tildearrow/furnace
- https://github.com/tildearrow/furnace/blob/v0.6.8.3/src/engine/fileOps/ftm.cpp#L1597-L1605
- https://github.com/tildearrow/furnace/commit/c120c72391e3229fe258e5759f43427febcb8693
- https://github.com/tildearrow/furnace/issues/2966
- https://hackmd.io/@haindpwn/furnace-ftm-import-notemap-and-groove-subsong-oob