CVE-2026-116731 Details
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.
An out-of-bounds write vulnerability has been identified in the music tracker application Furnace, specifically in versions through 0.6.8.3. The issue arises within the FamiTracker module importer, where an unchecked subsong index in the GROOVES block allows attackers to corrupt heap memory. By crafting a FamiTracker module with two or more subsongs, an attacker can write beyond the bounds of the subsong vector, leading to a crash when the module is opened.
Users can update to the latest version of Furnace, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 26, 2026CISA-ADP
Assessed Nov 5, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://hackmd.io/@haindpwn/furnace-ftm-import-notemap-and-groove-subsong-oob | CISA-ADP | BundleTechnical Analysis |
| https://github.com/tildearrow/furnace | [email protected] | ProductVendor |
| https://github.com/tildearrow/furnace/blob/v0.6.8.3/src/engine/fileOps/ftm.cpp#L1597-L1605 | [email protected] | Source CodeVendor |
| https://github.com/tildearrow/furnace/commit/c120c72391e3229fe258e5759f43427febcb8693 | [email protected] | Source CodeVendor |
| https://github.com/tildearrow/furnace/issues/2966 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://hackmd.io/@haindpwn/furnace-ftm-import-notemap-and-groove-subsong-oob | [email protected] | BundleTechnical Analysis |
| https://www.vulncheck.com/advisories/furnace-through-0.6.8.3-out-of-bounds-write-via-famitracker-grooves-block-import | [email protected] | AdvisoryBundleVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-129 | Improper Validation of Array Index | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Furnace | <= 0.6.8.3 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 5, 2026 | CVE Modified | CISA-ADP |
| Oct 26, 2026 | New CVE Received | [email protected] |