CVE-2026-6687

Katalog CVE

CVSS 7.6 · High EPSS 0,35%

Kerentanan Stack-based Buffer Overflow pada elm-chan fatfs. Skor CVSS 3.1 7.6 (High) menurut CNA.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

1 Juli 2026

Terakhir diubah

2 Juli 2026

Status NVD

Analyzed

CVSS 3.1

7.6 (High), sumber CNA
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-121: Stack-based Buffer Overflow

EPSS (30 hari)

0,35% peluang dieksploitasi; lebih tinggi dari 26,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/runZeroInc/vulns-2026-fatfs-chance advisory pihak ketiga · exploit
• https://www.runzero.com/advisories/fatfs-exfat-label-len-of-cve-2026-6687/ advisory pihak ketiga
• https://www.runzero.com/blog/fatfs-bugs/ advisory pihak ketiga · exploit
• https://elm-chan.org/fsw/ff/ product