CVE-2026-6682

Katalog CVE

CVSS 7.6 · High EPSS 0,32%

Kerentanan Integer Overflow or Wraparound pada elm-chan fatfs. Skor CVSS 3.1 7.6 (High) menurut CNA.

Deskripsi (NVD)

In FatFS R0.16 and earlier contains a FAT32 integer overflow bug in mount_volume() where fasize *= fs->n_fats can wrap, leading to attacker-controlled file-size metadata and unsafe read lengths in downstream callers. This maps to CWE-190 (Integer Overflow or Wraparound). 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). Remote delivery is also possible in OTA/update pipelines. 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-190: Integer Overflow or Wraparound

EPSS (30 hari)

0,32% peluang dieksploitasi; lebih tinggi dari 23,4% 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-fat32-int-of-mnt-cve-2026-6682/ advisory pihak ketiga · exploit
• https://www.runzero.com/blog/fatfs-bugs/ advisory pihak ketiga · exploit
• https://elm-chan.org/fsw/ff/ product