{"id":"CVE-2025-13086","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-13086","generatedAt":"2026-10-28T02:13:17.883Z","title":"Improper validation of source IP addresses in OpenVPN version 2.6.0 through 2.6.15 and 2.7_alpha1 through 2.7_rc1 allows an attacker to open a session from a different IP address which did not initiate the connection resulting in a denial of service for…","description":"Improper validation of source IP addresses in OpenVPN version 2.6.0 through 2.6.15 and 2.7_alpha1 through 2.7_rc1 allows an attacker to open a session from a different IP address which did not initiate the connection resulting in a denial of service for the originating client","published":"2025-12-03T20:16:24.000Z","lastModified":"2026-09-25T23:10:00.000Z","status":"Analyzed","sourceIdentifier":"security@openvpn.net","cvss":{"version":"4.0","score":4.6,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-940"],"affected":["openvpn/openvpn"],"epss":{"score":0.00641,"percentile":0.50466,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.64%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://community.openvpn.net/Security%20Announcements/CVE-2025-13086","tags":["Vendor Advisory"],"source":"security@openvpn.net"},{"url":"https://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00151.html","tags":["Mailing List","Release Notes"],"source":"security@openvpn.net"},{"url":"https://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00152.html","tags":["Mailing List","Release Notes"],"source":"security@openvpn.net"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-13086","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}