Is CVE-2026-6682 actively exploited?

No active exploitation of CVE-2026-6682 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-6682 be exploited remotely?

No. CVE-2026-6682 requires physical access to exploit.

What is the CVSS score of CVE-2026-6682?

CVE-2026-6682 has a CVSS score of 7.6 (HIGH).

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HIGH

CVE-2026-6682

CWE-190Published: July 1, 2026· Updated: Jul 2, 2026

7.6

CVSS v3.1

EPSS:0.19%probability of exploitation in 30 daysPercentile:8.8th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-6682 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.6.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.