cvedb.io
CVE-2026-6687
HIGH · CVSS 7.6
EPSS exploitation probability: 0%
Published 2026-07-01T15:17:12.870 · Last modified 2026-07-02T14:38:40.173

Summary

FatFs R0.16 and earlier contains a stack overflow bug in f_getlabel() because exFAT label length (XDIR_NumLabel) is trusted without enforcing spec maximums. This maps to CWE-121 (Stack-based Buffer Overflow). Estimated CVSS v3.1 vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H (7.6, High). The estimated CISA SSVC vectors are Exploitation: PoC, Technical Impact: Total.

Affected products

elm-chan — fatfs

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.