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

{
  "id": "095fd9832c7b3752abb1475623b2b3d3d7f759691e797f8ee7a78e34ac34e617",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116731",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Furnace through 0.6.8.3 Out-of-Bounds Write via FamiTracker GROOVES Block Import",
    "summary": "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.",
    "evidence": "cve:CVE-2026-116731",
    "products": [
      {
        "name": {
          "value": "furnace",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-116731",
      "aliases": [
        "CVE-2026-116731"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 6.9,
            "attackVector": "LOCAL",
            "baseSeverity": "MEDIUM",
            "vectorString": "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",
            "userInteraction": "PASSIVE",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "LOW",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE"
          }
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 6.1,
            "attackVector": "LOCAL",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H",
            "integrityImpact": "LOW",
            "userInteraction": "REQUIRED",
            "attackComplexity": "LOW",
            "availabilityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "NONE"
          }
        }
      ],
      "affected": [
        {
          "repo": "https://github.com/tildearrow/furnace",
          "vendor": "tildearrow",
          "product": "furnace",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "versionType": "custom",
              "lessThanOrEqual": "0.6.8.3"
            }
          ],
          "packageURL": "pkg:github/tildearrow/furnace",
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-26T21:52:32.953Z",
      "provider": "cve",
      "references": [
        "https://github.com/tildearrow/furnace/issues/2966",
        "https://github.com/tildearrow/furnace",
        "https://github.com/tildearrow/furnace/commit/c120c72391e3229fe258e5759f43427febcb8693",
        "https://github.com/tildearrow/furnace/blob/v0.6.8.3/src/engine/fileOps/ftm.cpp#L1597-L1605",
        "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"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
          "shortName": "VulnCheck",
          "dateUpdated": "2026-10-26T21:52:32.953Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-116731",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 353932,
  "published_at": "2026-10-26T21:52:32.953+00:00"
}