CVE-2026-116731

EUVD-2026-110479
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
6.1 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 3%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources (CNA/ADP records, vendor advisories, Enginsight analysis).
VendorProductVersionSource
tildearrowfurnace
𝑥
≤ 0.6.8.3
CNA
Common Weakness Enumeration
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
https://www.vulncheck.com/advisories/furnace-through-0.6.8.3-out-of-bounds-write-via-famitracker-grooves-block-import