VULNERABILITY INTELLIGENCE

CVE-2026-6684

CVSS score4.6 MEDIUM
EPSS probability0.31%
CISA KEVNot currently listed
Published2026-07-01
Last modified2026-10-25
CVSS vectorCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

FatFs prior to R0.16 that use GPT scanning with 'FF_LBA64 = 1' contains an issue where an unbounded loop count derived from GPT header field GPTH_PtNum, enabling extremely long or effectively infinite mount-time scans. This maps to CWE-835 (Loop with Unreachable Exit Condition). 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). The estimated CISA SSVC vectors are Exploitation: PoC, Technical Impact: Partial.

Weakness classification

  • 44488dab-36db-4358-99f9-bc116477f914: CWE-835

Primary references