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// vulnerability record
cached · NVD via COSMOS syncCVE-2026-6683
MEDIUMpublished 2026-07-01 15:17 UTC · 3 days ago · modified 2026-07-02 14:38 UTC
4.6
CVSS / 10
// description
FatFs R0.16 and earlier contains a divide-by-zero in exFAT sync logic bug when crafted metadata causes n_fatent - 2 to be zero during write/sync operations. This maps to CWE-369 (Divide By Zero). Estimated CVSS v3.1 vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (4.6, Medium). Network-delivered update media can make this remote in some pipelines. The estimated CISA SSVC vectors are Exploitation: PoC, Technical Impact: Partial.
// weaknesses (CWE)
- CWE-369