PT-2026-54929 · Chan · Fatfs

Hd Moore + 1 · Publicado 2026-07-01 · Atualizado 2026-07-01 · CVE-2026-6687

NVD

CVSS v3.1

7.6

Alta

Vetor base

AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

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.

Exploit

Correção

Stack Overflow

Enumeração de Fraquezas

CWE-121

Identificadores relacionados

CVE-2026-6687

Produtos afetados

Fatfs

Referências · 5

• 🔥 https://github.com/runZeroInc/vulns-2026-fatfs-chance · Exploit
• https://elm-chan.org/fsw/ff · Nota
• https://runzero.com/blog/fatfs-bugs · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-6687 · Nota de Segurança
• https://runzero.com/advisories/fatfs-exfat-label-len-of-cve-2026-6687 · Nota