CVE-2026-56790 (GCVE-0-2026-56790)

Vulnerability from cvelistv5 – Published: 2026-06-25 18:14 – Updated: 2026-11-08 14:06 X_Open Source
VLAI
Title
CANBoat - Off-by-One Global Buffer Overflow in searchForPgn()
Summary
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.
Severity
7 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-25 21:36 UTC
CWE
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7808 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
canboat canboat Affected: 0 , ≤ 6.22 (custom)
Unaffected: a5a22b74b9ac5688019cba62669df08562cebd6f (git)
guessed Create a notification for this product.
Date Public
2026-06-09 00:00
Credits
FuzzingLabs
Show details on NVD website
To clipboard 

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