CVE-2026-116731

Furnace through 0.6.8.3 Out-of-Bounds Write via FamiTracker GROOVES Block Import

6.9 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Passive

What an attacker can affect

Confidentiality: None
Integrity: Low
Availability: High

Exploit likelihood

0.14%Unchanged since Oct 27, 2026

What each source reports

CVE List Score used 6.9

Furnace through 0.6.8.3 Out-of-Bounds Write via FamiTracker GROOVES Block Import

Record: CVE-2026-116731
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Weakness: CWE-129
Updated: 2026-11-05

EUVDEUVD-2026-110479 6.9

Record: EUVD-2026-110479
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-05

GitHub AdvisoriesGHSA-wgh7-jp98-6g9w 6.9

Furnace through 0.6.8.3 contains an out-of-bounds write vulnerability in DivEngine::loadFTM()...

Record: GHSA-wgh7-jp98-6g9w
CVSS 4.0: 6.9 MediumCVSS: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
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Weakness: CWE-129
Updated: 2026-11-02

NVD 6.9

Record: CVE-2026-116731
CVSS 4.0: 6.9 MediumCVSS: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
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Weakness: CWE-129
Updated: 2026-11-05

OSV 6.9

Furnace through 0.6.8.3 Out-of-Bounds Write via FamiTracker GROOVES Block Import

Record: CVE-2026-116731
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-129
Updated: 2026-11-07

OSVDEBIAN-CVE-2026-116731 6.9

Record: DEBIAN-CVE-2026-116731
CVSS 4.0: 6.9 MediumCVSS: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
Updated: 2026-11-06

OSVUBUNTU-CVE-2026-116731 6.9

Record: UBUNTU-CVE-2026-116731
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Updated: 2026-11-02

Affected products

tildearrow furnace

Affected packages

Affected packages
Package	Affected	Fixed
`furnace` Debian:13	All versions, plus listed versions 0.6.8.1+git20250403+ds-10.6.8.3+git20250912+ds-10.6.8.3+git20250912+ds-2	None known
`furnace` Debian:14	All versions, plus listed versions 0.6.8.1+git20250403+ds-10.6.8.3+git20250912+ds-10.6.8.3+git20250912+ds-2	None known
`furnace` Ubuntu:26.10	All versions, plus listed versions 0.6.8.3+git20250912+ds-2	None known
`furnace` Ubuntu:26.04:LTS	All versions, plus listed versions 0.6.8.1+git20250403+ds-10.6.8.3+git20250912+ds-10.6.8.3+git20250912+ds-2	None known

History

History
Recorded	Changed	Sources
Nov 5, 2026	facts, references	CVE List
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-116731 is a medium vulnerability (CVSS 6.9) in Tildearrow Furnace, published October 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.14%, the 3rd percentile. No source names a fixed version.

References

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