{"id":"CVE-2026-105390","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 write to the ovpn-dco device, causing the host to become unr…","summary":"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 unr…","severity":"medium","cvss":6.9,"cvssVector":"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","cwe":["CWE-413","CWE-833"],"vendor":"OpenVPN","product":"ovpn-dco-win","affected":["ovpn-dco-win >= 0.6.5 <= 1.3.5","ovpn-dco-win >= 2.4.0 <= 2.8.7"],"published":"2026-10-13","updated":"2026-10-15","sourceUpdated":"2026-10-15T20:38:04.303","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-105390","references":[{"url":"https://community.openvpn.net/Security%20Announcements/CVE-2026-105390","label":"security@openvpn.net"}],"tags":["nvd","cve.org"],"epss":0.00113,"epssPercentile":0.01432,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-14T18:07:58.275427Z"},"cvssSource":"cna","ingestedAt":"2026-10-14T00:07:19.218Z","slug":"CVE-2026-105390","body":"## Overview\n\nImproper 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":38,"depthScoreParts":{"impact":38,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":221793,"id":"CVE-2026-105390","ts":1792035812338,"field":"cvss","old":null,"new":"6.9"},{"seq":221792,"id":"CVE-2026-105390","ts":1792035812338,"field":"severity","old":"none","new":"medium"}]}