{"id":"CVE-2026-13117","title":"An incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to trigger a use-after-free during TLS session promotion, potentially leading to a denial of service or memory leakage","summary":"An incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to trigger a use-after-free during TLS session promotion, potentially leading to a denial of service or memory leakage","severity":"medium","cvss":6,"cvssVector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-416"],"vendor":"OpenVPN","product":"OpenVPN","affected":["OpenVPN >= 2.6.0 <= 2.6.20","OpenVPN >= 2.7_alpha1 <= 2.7.4"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-07-30T18:08:14.034841Z"},"published":"2026-07-30","updated":"2026-09-17","sourceUpdated":"2026-09-17T18:36:22.675Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-13117","references":[{"url":"https://community.openvpn.net/Security%20Announcements/CVE-2026-13117"},{"url":"https://community.openvpn.net/ReleaseHistory#openvpn-275-released-1-july-2026"},{"url":"https://community.openvpn.net/ReleaseHistory#openvpn-2621-released-1-july-2026"}],"tags":["cve.org"],"epss":0.00398,"epssPercentile":0.33806,"ingestedAt":"2026-09-17T19:26:25.353Z","slug":"CVE-2026-13117","body":"## Overview\n\nAn incomplete guard in OpenVPN 2.6.0 through 2.6.20 and 2.7_alpha1 through 2.7.4 allows remote authenticated peers to trigger a use-after-free during TLS session promotion, potentially leading to a denial of service or memory leakage\n\n## Affected\n\n- `OpenVPN >= 2.6.0 <= 2.6.20`\n- `OpenVPN >= 2.7_alpha1 <= 2.7.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":33,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}