{"id":"CVE-2026-81738","aliases":["EUVD-2026-72278","GHSA-7xfh-h474-9hf7","UBUNTU-CVE-2026-81738"],"status":"published","title":"OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger...","description":"OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger an out-of-bounds write via crafted DOMAIN-SEARCH entries","severity":{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00331,"percentile":0.2661,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121","CWE-193","CWE-787"],"published":"2026-09-04T00:00:00Z","modified":"2026-09-11T20:53:44Z","products":[{"vendor":"openvpn","product":"openvpn"}],"references":[{"url":"https://community.openvpn.net/Security%20Announcements/CVE-2026-81738","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81738"},{"url":"https://github.com/advisories/GHSA-7xfh-h474-9hf7"},{"url":"https://ubuntu.com/security/CVE-2026-81738","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-81738","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-81738","description":"OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger an out-of-bounds write via crafted DOMAIN-SEARCH entries","status":"published","published":"2026-09-07T07:32:20.43Z","modified":"2026-09-08T14:55:10.107Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L","level":"low","assessor":"cna"}],"cwes":["CWE-121","CWE-193","CWE-787"],"updated_at":"2026-11-02T13:36:18.075535Z"}],"euvd":[{"id":"EUVD-2026-72278","description":"OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger an out-of-bounds write via crafted DOMAIN-SEARCH entries","status":"published","published":"2026-09-07T07:32:20Z","modified":"2026-09-08T14:55:10Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L","level":"low"}],"updated_at":"2026-11-02T17:28:29.426Z"}],"ghsa":[{"id":"GHSA-7xfh-h474-9hf7","title":"OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger...","description":"OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger an out-of-bounds write via crafted DOMAIN-SEARCH entries","status":"published","published":"2026-09-07T09:31:39Z","modified":"2026-09-07T09:31:46Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L/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","level":"low"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:11:26.557204Z"}],"nvd":[{"id":"CVE-2026-81738","description":"OpenVPN 2.5.0 through 2.7.6 on Windows using the tap-windows6 driver allows attackers to trigger an out-of-bounds write via crafted DOMAIN-SEARCH entries","status":"published","published":"2026-09-07T08:17:13.27Z","modified":"2026-09-08T19:07:52.113Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L/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","level":"low","assessor":"secondary"}],"cwes":["CWE-121","CWE-193","CWE-787"],"updated_at":"2026-11-02T14:12:44.082631Z"}],"osv":[{"id":"UBUNTU-CVE-2026-81738","description":"[Unknown description]","status":"withdrawn","published":"2026-09-04T00:00:00Z","modified":"2026-09-11T20:53:44.434654631Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:L/SA:L","level":"low"}],"updated_at":"2026-11-02T16:57:22.213888Z"}]}}