{"id":"CVE-2026-101103","aliases":[],"cve":{"records":[{"id":"CVE-2026-101103","source":"icscert","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-15T15:32:21.930Z","published":"2026-10-20T20:19:10.646Z","modified":"2026-10-29T19:01:16.074Z"}],"publishers":[{"name":"icscert","role":"CNA","organizationId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","modified":"2026-10-20T20:19:10.646Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-29T19:01:16.074Z"}],"references":[{"url":"https://www.hms-networks.com/cybersecurity","tags":[],"source":"icscert"},{"url":"https://www.peak-system.com/support/downloads/software/","tags":[],"source":"icscert"},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-293-01","tags":[],"source":"icscert"},{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-293-01.json","tags":[],"source":"icscert"}],"weaknesses":[{"id":"CWE-120","description":"CWE-120","source":"icscert"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-29T19:00:54.909746Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"HMS Networks PEAK-System PCAN Windows drivers Classic Buffer Overflow","titleSource":"icscert","descriptionSource":"icscert","description":"The PEAK-System PCAN diagnostic call did not validate that the caller-supplied output buffer was large enough to hold the output record.","score":6.8,"severity":"medium","published":"2026-10-20T20:19:10.646Z","modified":"2026-10-29T19:01:16.074Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"HMS Networks","name":"PEAK-System Device Driver Setup","platforms":[],"versions":[{"version":"0","status":"affected","lessThanOrEqual":"5.1.2.1151","versionType":"custom"},{"version":"5.1.4","status":"unaffected"}],"defaultStatus":"unaffected","cpes":[],"source":"icscert","url":"https://www.cve.org/CVERecord?id=CVE-2026-101103"},{"vendor":"HMS Networks","name":"PCAN Windows CAN device drivers","platforms":[],"versions":[{"version":"0","status":"affected","lessThanOrEqual":"5.1.2","versionType":"custom"},{"version":"5.1.4","status":"unaffected"}],"defaultStatus":"unaffected","cpes":[],"source":"icscert","url":"https://www.cve.org/CVERecord?id=CVE-2026-101103"}],"remediation":[{"text":"HMS Networks AB has addressed the issue in version 5.1.4 and recommends that users upgrade to the newest available version.  Users can find software updates for PEAK-System PCAN on the  software download page https://www.peak-system.com/support/downloads/software/ .\n\n\n\n\nFor more information see the associated  HMS security advisory https://www.hms-networks.com/cybersecurity .","source":"icscert","url":"https://www.cve.org/CVERecord?id=CVE-2026-101103"}],"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"],"sources":[{"name":"CVE","id":"CVE-2026-101103","modified":"2026-10-29T19:01:16.074Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-101103"}],"assessments":[{"source":"icscert","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},{"source":"icscert","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}],"sourceAffected":[],"observedAt":"2026-10-29T19:29:40.160Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T13:55:32.867Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-29T19:40:33.334Z","attemptedAt":"2026-10-29T19:40:33.334Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-29T19:40:33.674Z","attemptedAt":"2026-10-29T19:40:33.674Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-29T19:40:33.872Z","attemptedAt":"2026-10-29T19:40:33.872Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-29T19:40:33.306Z","attemptedAt":"2026-10-29T19:40:33.306Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-101103","url":"https://www.first.org/epss/","probability":0.00122,"percentile":0.01985,"date":"2026-10-29","checkedAt":"2026-10-29T19:40:33.306Z"},{"source":"NVD","id":"CVE-2026-101103","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101103","modified":"2026-10-29T19:17:14.923","score":6.8,"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/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","checkedAt":"2026-10-29T19:40:33.334Z"},{"source":"NVD","id":"CVE-2026-101103","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101103","modified":"2026-10-29T19:17:14.923","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","checkedAt":"2026-10-29T19:40:33.334Z"},{"source":"GitHub Advisory Database","id":"GHSA-cw79-5c2h-gpr4","url":"https://github.com/advisories/GHSA-cw79-5c2h-gpr4","modified":"2026-10-20T21:31:06Z","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","checkedAt":"2026-10-29T19:40:33.674Z"},{"source":"ENISA EUVD","id":"EUVD-2026-105316","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-105316","modified":"Oct 20, 2026, 8:19:10 PM","score":6.8,"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","checkedAt":"2026-10-29T19:40:33.872Z"}],"aiSummary":{"text":"HMS Networks PEAK-System PCAN Windows drivers have a buffer overflow weakness due to insufficient validation of the caller-supplied output buffer. The issue affects versions up to 5.1.2.1151. The impact is unspecified.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:48:55.141Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-101103"}]}}