CVE-2026-56790
7
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
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| canboat | canboat | 0 <= 6.22 | affected |
| canboat | canboat | a5a22b74b9ac5688019cba62669df08562cebd6f | unaffected |
Weaknesses
- CWE-193: Off-by-one Error
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: no
- Technical Impact: partial
References
- https://github.com/canboat/canboat/issues/644
- https://github.com/canboat/canboat/pull/649
- https://github.com/canboat/canboat/commit/a5a22b74b9ac5688019cba62669df08562cebd6f
- https://www.vulncheck.com/advisories/canboat-off-by-one-global-buffer-overflow-in-searchforpgn
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