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// vulnerability record
cached · NVD via COSMOS syncCVE-2026-6688
HIGHpublished 2026-07-01 15:17 UTC · 3 days ago · modified 2026-07-02 14:38 UTC
7.6
CVSS / 10
// description
FatFs R0.16 and earlier contains a downstream-caller vulnerability pattern associated with FatFs long filename handling. With LFN enabled, fno.fname can be up to 255 characters; many callers copy it into short fixed buffers without bounds checks, causing overflow. This maps to CWE-120 (Buffer Copy without Checking Size of Input). 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.
// weaknesses (CWE)
- CWE-120