PT-2026-52553 · Canboat · Canboat

Fuzzinglabs · Published 2026-06-25 · Updated 2026-06-25 · CVE-2026-56790

NVD

CVSS v3.1

7.3

High

Base vector

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

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.

Exploit

Fix

Weakness Enumeration

CWE-193

Related Identifiers

CVE-2026-56790

Affected Products

Canboat

References · 5

• 🔥 https://github.com/canboat/canboat/issues/644 · Exploit
• https://github.com/canboat/canboat/commit/a5a22b74b9ac5688019cba62669df08562cebd6f · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-56790 · Security Note
• https://github.com/canboat/canboat/pull/649 · Note
• https://vulncheck.com/advisories/canboat-off-by-one-global-buffer-overflow-in-searchforpgn · Note