CVE-2026-6688 - CERT CVE
ID CVE-2026-6688
Sažetak 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.
Reference
CVSS
Base: 7.6
Impact: 6.0
Exploitability:0.9
Pristup
VektorSloženostAutentikacija
PHYSICAL LOW NONE
Impact
PovjerljivostCjelovitostDostupnost
HIGH HIGH HIGH
CVSS vektor CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Zadnje važnije ažuriranje 01-07-2026 - 18:31
Objavljeno 01-07-2026 - 15:17