CVE-2026-56790CWE-193

CANBoat - Off-by-One Global Buffer Overflow in searchForPgn()

High · published June 25, 2026

CVSS v4.0
7.0
EPSS
0%
Percentile
22.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
7.0 · HIGH
Vector
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
EPSS
0.00309 · 22.5th percentile
Weakness
CWE-193 · Off-by-one Error
Published
2026-06-25T18:14Z
EPSS history
Timeline
  • 25 JUN 18:14Z
    CANBoat - Off-by-One Global Buffer Overflow in searchForPgn()
    cvelistv5