{"id":"CVE-2026-88964","title":"An integer underflow in OpenVPN version 2.7_alpha3 through 2.7.7 on Windows and Android allows remote authenticated servers to cause a denial of service or memory disclosure via crafted domain search options","summary":"An integer underflow in OpenVPN version 2.7_alpha3 through 2.7.7 on Windows and Android allows remote authenticated servers to cause a denial of service or memory disclosure via crafted domain search options","severity":"high","cvss":7.1,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","cwe":["CWE-125","CWE-191"],"vendor":"OpenVPN","product":"OpenVPN","affected":["OpenVPN >= 2.7_alpha3 <= 2.7.7"],"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-2026-88964","references":[{"url":"https://community.openvpn.net/Security%20Announcements/CVE-2026-88964","label":"security@openvpn.net"}],"tags":["nvd","cve.org"],"epss":0.00378,"epssPercentile":0.31598,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-14T18:09:00.654409Z"},"cvssSource":"cna","ingestedAt":"2026-10-14T00:07:19.220Z","slug":"CVE-2026-88964","body":"## Overview\n\nAn integer underflow in OpenVPN version 2.7_alpha3 through 2.7.7 on Windows and Android allows remote authenticated servers to cause a denial of service or memory disclosure via crafted domain search options\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":221797,"id":"CVE-2026-88964","ts":1792035812995,"field":"cvss","old":null,"new":"7.1"},{"seq":221796,"id":"CVE-2026-88964","ts":1792035812995,"field":"severity","old":"none","new":"high"}]}