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CVE-2026-6682

🗓️ 01 Jul 2026 13:36:59Reported by runZeroType 
cve
 cve
🔗 web.nvd.nist.gov👁 5 Views

CVE-2026-6682 affects FatFs in R0.16 and earlier, where in mount_volume() a multiply operation fasize *= fs->n_fats can overflow, causing an integer wrap. This overflow can lead to attacker-controlled file-size metadata and unsafe read lengths ...

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-6682
1 Jul 202613:36
attackerkb
Circl
CVE-2026-6682
2 Jul 202600:31
circl
Cvelist
CVE-2026-6682 FatFs Integer Overflow in FAT32 Volume Mount
1 Jul 202613:36
cvelist
EUVD
EUVD-2026-40992
1 Jul 202613:36
euvd
NVD
CVE-2026-6682
1 Jul 202615:17
nvd
Vulnrichment
CVE-2026-6682 FatFs Integer Overflow in FAT32 Volume Mount
1 Jul 202613:36
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
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.6
SSVC
5