{"id":"CVE-2026-105390","state":"PUBLISHED","title":"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 wri","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.","publishedAt":"2026-10-13T22:44:38.433Z","updatedAt":"2026-10-14T18:08:12.000Z","severity":{"score":6.9,"label":"Medium","version":"4.0","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","source":"OpenVPN"},"assigner":"OpenVPN","products":["OpenVPN ovpn-dco-win"],"affected":[{"vendor":"OpenVPN","product":"ovpn-dco-win","defaultStatus":"unaffected","versions":[{"version":"0.6.5","status":"affected","lessThanOrEqual":"1.3.5","versionType":"semver"},{"version":"2.4.0","status":"affected","lessThanOrEqual":"2.8.7","versionType":"semver"}],"platforms":["Windows"]}],"references":["https://community.openvpn.net/Security%20Announcements/CVE-2026-105390"],"weaknesses":["CWE-413","CWE-833"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/105xxx/CVE-2026-105390.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-105390","state":"PUBLISHED","datePublished":"2026-10-13T22:44:38.433Z","dateUpdated":"2026-10-14T18:08:12.000Z","assignerShortName":"OpenVPN","assignerOrgId":"36a55730-e66d-4d39-8ca6-3c3b3017965e","dateReserved":"2026-10-05T10:34:02.496Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"OpenVPN","product":"ovpn-dco-win","defaultStatus":"unaffected","versions":[{"version":"0.6.5","status":"affected","lessThanOrEqual":"1.3.5","versionType":"semver"},{"version":"2.4.0","status":"affected","lessThanOrEqual":"2.8.7","versionType":"semver"}],"platforms":["Windows"]}],"references":[{"url":"https://community.openvpn.net/Security%20Announcements/CVE-2026-105390","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":6.9,"vectorString":"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-413","lang":"en","description":"CWE-413 Improper resource locking","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-833","lang":"en","description":"CWE-833 Deadlock","type":"CWE"}]}],"providerMetadata":{"shortName":"OpenVPN","orgId":"36a55730-e66d-4d39-8ca6-3c3b3017965e","dateUpdated":"2026-10-13T22:44:38.433Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-14T18:07:58.275427Z","id":"CVE-2026-105390","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-14T18:08:12.000Z"}}]}}}