CVE-2026-56790

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Source
https://cve.org/CVERecord?id=CVE-2026-56790
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56790.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-56790
Published
2026-06-25T18:14:48.573Z
Modified
2026-07-16T03:48:43.681225209Z
Severity
  • 7.0 (High) CVSS_V4 - 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 CVSS Calculator
Summary
CANBoat - Off-by-One Global Buffer Overflow in searchForPgn()
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-193"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56790.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "last_affected": "6.22"
                }
            ],
            "source": "AFFECTED_FIELD"
        },
        {
            "extracted_events": [
                {
                    "fixed": "6.22"
                }
            ],
            "source": "DESCRIPTION"
        }
    ],
    "cna_assigner": "VulnCheck"
}
References

Affected packages

Git / github.com/canboat/canboat

Affected ranges

Type
GIT
Repo
https://github.com/canboat/canboat
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a5a22b74b9ac5688019cba62669df08562cebd6f
Database specific 
{
    "source": "REFERENCES"
}

Affected versions

v1.*
v1.0.0
v1.1.0
v1.2.0
v1.2.1
v1.3.0
v4.*
v4.10.0
v4.10.1
v4.11.0
v4.11.1
v4.12.0
v4.2.1
v4.2.2
v4.3.0
v4.4.0
v4.5.0
v4.5.1
v4.6.0
v4.6.1
v4.9.1
v4.9.2
v5.*
v5.0.0
v5.0.1
v5.0.2
v5.1.0
v5.1.1
v5.1.2
v5.1.3
v6.*
v6.0.0
v6.0.1
v6.1.0
v6.1.1
v6.1.2
v6.1.3
v6.1.4
v6.1.5
v6.1.6
v6.1.7
v6.1.8
v6.1.9
v6.2.0
v6.2.1
v6.2.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56790.json"