{"schemaVersion":3,"id":"CVE-2026-105390","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Improper synchronization in the OpenVPN ovpn-dco-win for Windows versions 0.6.5 through 1.3.5 and 2.4.0 through 2.8.7 allows local attackers to trigger a deadlock via a crafted write to the ovpn-dco device, causing the host to become unresponsive.","dates":{"published":"2026-10-13T22:44:38.433Z","modified":"2026-10-14T18:08:12.000Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.9,"severity":"medium","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":6.9,"severity":"medium","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":6.9,"severity":"medium","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/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","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00113,"percentile":0.01365,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-14T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00113,"percentile":0.01365}],"last30":[{"date":"2026-10-14T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00113,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00113,"percentile":0.01365}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-413","name":"Improper Resource Locking","description":"The product does not lock or does not correctly lock a resource when the product must have exclusive access to the resource.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/413.html"},{"id":"CWE-833","name":"Deadlock","description":"The product contains multiple threads or executable segments that are waiting for each other to release a necessary lock, resulting in deadlock.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/833.html"}],"affected":[{"vendor":"openvpn","product":"ovpn-dco-win","name":"ovpn-dco-win","label":"ovpn-dco-win","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 0.6.5, ≤ 1.3.5","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2.4.0, ≤ 2.8.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 0.6.5, ≤ 1.3.5 | ≥ 2.4.0, ≤ 2.8.7","eol":null,"hubHref":"/vendor/openvpn/ovpn-dco-win"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://community.openvpn.net/Security%20Announcements/CVE-2026-105390","label":"community.openvpn.net/Security%20Announcements/CVE-2026-105390","hostname":"community.openvpn.net","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-13T22:44:38.433Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-14T18:08:12.000Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":28,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T07:03:41.824Z","stale":false,"partial":false}}