{"id":"CVE-2026-101103","revision":"752f4a5924744488bf9c1a1d6ca8d6e3","records":[{"revision":"752f4a5924744488bf9c1a1d6ca8d6e3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-101103","aliases":[],"title":"HMS Networks PEAK-System PCAN Windows drivers Classic Buffer Overflow","description":"The PEAK-System PCAN diagnostic call did not validate that the caller-supplied output buffer was large enough to hold the output record.","state":0,"publishedAt":"2026-10-20T20:19:10.646+00:00","modifiedAt":"2026-10-20T20:19:10.646+00:00","affected":[{"ecosystem":"Vendor product","name":"PEAK-System Device Driver Setup","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"HMS Networks\",\n                    \"product\": \"PEAK-System Device Driver Setup\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"5.1.2.1151\",\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"5.1.4\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"},{"ecosystem":"Vendor product","name":"PCAN Windows CAN device drivers","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"HMS Networks\",\n                    \"product\": \"PCAN Windows CAN device drivers\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"5.1.2\",\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"5.1.4\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5,"severity":"MEDIUM"},{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":6.8,"severity":"MEDIUM"}],"references":["https://www.hms-networks.com/cybersecurity","https://www.peak-system.com/support/downloads/software/","https://www.cisa.gov/news-events/ics-advisories/icsa-26-293-01","https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-293-01.json"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-101103","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-101103","identifiers":["CVE-2026-101103"]},"retained":false,"historicalAffected":[]}],"coverage":[]}