{"id":"CVE-2026-84732","title":"Retransmissions of ACK packet ID in OpenVPN through 2.6.22 and 2.7.6 allow remote unauthenticated attackers to cause a denial of service via crafted inputs that trigger a timeout integer overflow","summary":"Retransmissions of ACK packet ID in OpenVPN through 2.6.22 and 2.7.6 allow remote unauthenticated attackers to cause a denial of service via crafted inputs that trigger a timeout integer overflow","severity":"high","cvss":8.7,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","cwe":["CWE-190"],"vendor":"OpenVPN","product":"OpenVPN","affected":["OpenVPN <= 2.6.22","OpenVPN <= 2.7.6"],"published":"2026-09-07","updated":"2026-09-08","sourceUpdated":"2026-09-08T19:07:52.113","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-84732","references":[{"url":"https://community.openvpn.net/Security%20Announcements/CVE-2026-84732","label":"security@openvpn.net"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-84732.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-84732"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-84732"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84732"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00544,"epssPercentile":0.44372,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-08T15:01:38.566516Z"},"cvssSource":"cna","scores":{"cna":8.7,"vendor":7.5},"ingestedAt":"2026-09-08T15:33:26.988Z","slug":"CVE-2026-84732","body":"## Overview\n\nRetransmissions of ACK packet ID in OpenVPN through 2.6.22 and 2.7.6 allow remote unauthenticated attackers to cause a denial of service via crafted inputs that trigger a timeout integer overflow\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-09-07 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-84732.json)","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":47.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}