CVE-2026-56790

HighCVSS 7.3/10Last modified Jul 14, 2026

Description

CANBoat through 6.22, fixed in commit a5a22b7, contains an off-by-one global buffer overflow in the searchForPgn() function in analyzer/pgn.c that allows remote attackers to crash the application. Attackers can deliver a crafted NMEA-2000 message with an out-of-range PGN value over CAN bus or N2K-over-IP to trigger an out-of-bounds array access and denial of service.

Metrics

CVSS 3.1 7.3/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H

Weakness enumeration

CWE-193

Affected software

No affected versions have been published.

Timeline

Published: Jun 25, 2026
Last modified: Jul 14, 2026
NVD status: Deferred

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