PT-2026-54925 · Fatfs · Fatfs
Hd Moore
+1
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Published
2026-07-01
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Updated
2026-07-06
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CVE-2026-6683
CVSS v3.1
4.6
Medium
| Vector | AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
FatFs versions R0.16 and earlier
Description
A divide-by-zero issue exists in the exFAT sync logic. This occurs during write or sync operations when crafted metadata causes the calculation
n fatent - 2 to result in zero. Divide-by-zero is a condition where a program attempts to divide a number by zero, which typically leads to a system crash or application failure.Recommendations
Update FatFs to a version later than R0.16.
Exploit
Fix
Divide By Zero
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Weakness Enumeration
Related Identifiers
Affected Products
Fatfs