CVE-2026-116731
Furnace through 0.6.8.3 Out-of-Bounds Write via FamiTracker GROOVES Block Import
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.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| furnace tildearrow tildearrow/furnace
github |
≥ 0; ≤ 0.6.8.3 (affected, custom)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.9 medium |
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 6.1 medium |
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H | CNA: VulnCheck |
| 4.0 / 6.9 medium |
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 6.1 medium |
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H | NVD: [email protected] |
Exploit evidence
- https://hackmd.io/@haindpwn/furnace-ftm-import-notemap-and-groove-subsong-oob
exploit · ADP: CISA-ADP
References
- https://github.com/tildearrow/furnace/issues/2966CNA: VulnCheck · issue-tracking
- https://github.com/tildearrow/furnaceCNA: VulnCheck · product
- https://github.com/tildearrow/furnace/commit/c120c72391e3229fe258e5759f43427febcb8693CNA: VulnCheck · patch
- https://github.com/tildearrow/furnace/blob/v0.6.8.3/src/engine/fileOps/ftm.cpp#L1597-L1605CNA: VulnCheck · technical-description
- https://hackmd.io/@haindpwn/furnace-ftm-import-notemap-and-groove-subsong-oobCNA: VulnCheck · third-party-advisory
- https://www.vulncheck.com/advisories/furnace-through-0.6.8.3-out-of-bounds-write-via-famitracker-grooves-block-importCNA: VulnCheck · third-party-advisory
- https://hackmd.io/@haindpwn/furnace-ftm-import-notemap-and-groove-subsong-oobADP: CISA-ADP · exploit
- https://github.com/tildearrow/furnace[email protected]
- https://github.com/tildearrow/furnace/blob/v0.6.8.3/src/engine/fileOps/ftm.cpp#L1597-L1605[email protected]
- https://github.com/tildearrow/furnace/commit/c120c72391e3229fe258e5759f43427febcb8693[email protected]
- https://github.com/tildearrow/furnace/issues/2966[email protected]
- https://hackmd.io/@haindpwn/furnace-ftm-import-notemap-and-groove-subsong-oob[email protected]
- https://www.vulncheck.com/advisories/furnace-through-0.6.8.3-out-of-bounds-write-via-famitracker-grooves-block-import[email protected]
- https://hackmd.io/@haindpwn/furnace-ftm-import-notemap-and-groove-subsong-oob134c704f-9b21-4f2e-91b3-4a467353bcc0
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