{"id":"CVE-2026-56790","aliases":["EUVD-2026-39532","GHSA-p2cc-x7hq-6jvm"],"status":"published","title":"CANBoat - Off-by-One Global Buffer Overflow in searchForPgn()","description":"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":{"version":"4.0","score":7,"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00309,"percentile":0.23949,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-193"],"published":"2026-06-25T18:14:48Z","modified":"2026-11-09T02:47:29Z","products":[{"vendor":"canboat","product":"canboat"}],"references":[{"url":"https://github.com/canboat/canboat/issues/644","tags":["technical-description","exploit","issue-tracking","report"]},{"url":"https://github.com/canboat/canboat/pull/649","tags":["issue-tracking","patch","fix"]},{"url":"https://github.com/canboat/canboat/commit/a5a22b74b9ac5688019cba62669df08562cebd6f","tags":["patch","fix"]},{"url":"https://www.vulncheck.com/advisories/canboat-off-by-one-global-buffer-overflow-in-searchforpgn","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56790","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-p2cc-x7hq-6jvm"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56790.json","tags":["advisory"]},{"url":"https://github.com/canboat/canboat","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-56790","title":"CANBoat - Off-by-One Global Buffer Overflow in searchForPgn()","description":"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.","status":"published","published":"2026-06-25T18:14:48.573Z","modified":"2026-11-08T14:06:28.433Z","cvss":[{"version":"4.0","score":7,"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","level":"high","assessor":"cna"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-193"],"updated_at":"2026-11-08T15:43:33.322657Z"}],"euvd":[{"id":"EUVD-2026-39532","description":"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.","status":"published","published":"2026-06-25T18:14:48Z","modified":"2026-11-08T14:06:28Z","cvss":[{"version":"4.0","score":7,"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","level":"high"}],"updated_at":"2026-11-08T15:13:07.762611Z"}],"ghsa":[{"id":"GHSA-p2cc-x7hq-6jvm","title":"CANBoat through 6.22, fixed in commit a5a22b7, contains an off-by-one global buffer overflow in...","description":"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.","status":"published","published":"2026-06-25T21:31:30Z","modified":"2026-06-25T21:31:38Z","cvss":[{"version":"4.0","score":7,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H","level":"high"}],"cwes":["CWE-193"],"updated_at":"2026-11-02T15:08:59.328511Z"}],"nvd":[{"id":"CVE-2026-56790","description":"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.","status":"published","published":"2026-06-25T19:16:45.637Z","modified":"2026-10-25T22:10:00.15Z","cvss":[{"version":"4.0","score":7,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-193"],"updated_at":"2026-11-02T14:12:26.045561Z"}],"osv":[{"id":"CVE-2026-56790","title":"CANBoat - Off-by-One Global Buffer Overflow in searchForPgn()","description":"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.","status":"published","published":"2026-06-25T18:14:48.573Z","modified":"2026-11-09T07:13:36.686796566Z","cvss":[{"version":"4.0","score":7,"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","level":"high"}],"cwes":["CWE-193"],"updated_at":"2026-11-09T03:16:17.543303Z"}]}}