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CVE-2026-6683

🗓️ 01 Jul 2026 13:41:11Reported by runZeroType 
cve
 cve
🔗 web.nvd.nist.gov👁 6 Views

CVE-2026-6683 describes a divide-by-zero in FatFs exFAT sync for FatFs R0.16 and earlier. The bug arises when crafted metadata causes the expression n_fatent - 2 to be zero during write/sync, mapping to CWE-369 (Divide By Zero). The vulnerability ...

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-6683
1 Jul 202613:41
attackerkb
Cvelist
CVE-2026-6683 FatFs Divide-by-Zero in exFAT Sync
1 Jul 202613:41
cvelist
EUVD
EUVD-2026-40993
1 Jul 202613:41
euvd
NVD
CVE-2026-6683
1 Jul 202615:17
nvd
Vulnrichment
CVE-2026-6683 FatFs Divide-by-Zero in exFAT Sync
1 Jul 202613:41
vulnrichment
[
  {
    "vendor": "ChaN",
    "product": "FatFs",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThanOrEqual": "R0.16",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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01 Jul 2026 18:31Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.6
SSVC
6