CVE-2026-116730

Furnace through 0.6.8.3 contains an out-of-bounds heap read vulnerability in DivEngine::loadFTM() in src/engine/fileOps/ftm.cpp, triggered by an unbounded DPCM note count during FamiTracker module import. Attackers can craft a .ftm, .dnm or 0CC/E-FamiTracker module with a 2A03 instrument note count above 120 to read past the noteMap array and crash Furnace when opened.

CVSS 4.0

6.8CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE

CWE-125

Published

2026-10-26

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

References

• https://github.com/tildearrow/furnace
• https://github.com/tildearrow/furnace/blob/v0.6.8.3/src/engine/fileOps/ftm.cpp#L981-L1017
• 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

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