{"schemaVersion":3,"id":"CVE-2026-84471","aliases":["UBUNTU-CVE-2026-84471","DEBIAN-CVE-2026-84471"],"status":"published","duplicateOf":null,"title":null,"description":"The fix for CVE-2026-12996 was incomplete. A use-after-free in OpenVPN 2.6.0 through 2.6.22 and 2.7_alpha1 through 2.7.7 allows remote authenticated peers to potentially cause a denial of service or leak memory via crafted packets during TLS session promotion or expiry.","dates":{"published":"2026-10-14T14:29:04.851Z","modified":"2026-10-16T15:31:52.556Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.2,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":7.2,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":7.2,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/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","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Debian","score":7.2,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/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","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":7.2,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true}]},"epss":{"probability":0.00408,"percentile":0.33662,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-15T00:00:00.000Z","score":0.00408,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00408,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00408,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00408,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00408,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00408,"percentile":0.33662}],"last30":[{"date":"2026-10-15T00:00:00.000Z","score":0.00408,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00408,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00408,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00408,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00408,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00408,"percentile":0.33662}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-416","name":"Use After Free","description":"The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory \"belongs\" to the code that operates on the new pointer.","type":"weakness","status":"Stable","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/416.html"}],"affected":[{"vendor":"debian","product":"openvpn","name":"openvpn","label":"openvpn","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/openvpn","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 2.7.7-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 2.7.7-1","eol":{"isEol":null,"eolDate":null,"matchMethod":"name_exact","cycle":null,"product":{"name":"openvpn","label":"OpenVPN","category":"app"}},"hubHref":null},{"vendor":"ubuntu","product":"openvpn","name":"openvpn","label":"openvpn","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/openvpn","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 2.5.11-0ubuntu0.22.04.5","noFixRecorded":false,"fixedIn":null},{"text":"< 2.6.19-0ubuntu0.24.04.4","noFixRecorded":false,"fixedIn":null},{"text":"< 2.7.0-1ubuntu1.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 2.5.11-0ubuntu0.22.04.5 | < 2.6.19-0ubuntu0.24.04.4 | < 2.7.0-1ubuntu1.3","eol":{"isEol":null,"eolDate":null,"matchMethod":"name_exact","cycle":null,"product":{"name":"openvpn","label":"OpenVPN","category":"app"}},"hubHref":null},{"vendor":"openvpn","product":"openvpn","name":"OpenVPN","label":"openvpn","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 2.6.0, ≤ 2.6.22","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2.7_alpha1, ≤ 2.7.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2.6.0, ≤ 2.6.22 | ≥ 2.7_alpha1, ≤ 2.7.7","eol":{"isEol":null,"eolDate":null,"matchMethod":"name_exact","cycle":null,"product":{"name":"openvpn","label":"OpenVPN","category":"app"}},"hubHref":"/vendor/openvpn/openvpn"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/CVE-2026-84471","label":"ubuntu.com/security/CVE-2026-84471","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-84471","label":"www.cve.org/CVERecord?id=CVE-2026-84471","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-8852-1","label":"ubuntu.com/security/notices/USN-8852-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-84471","label":"security-tracker.debian.org/tracker/CVE-2026-84471","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://community.openvpn.net/Security%20Announcements/CVE-2026-84471","label":"community.openvpn.net/Security%20Announcements/CVE-2026-84471","hostname":"community.openvpn.net","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":["MGASA-2026-0498","USN-8852-1"],"duplicates":[],"related":["USN-8852-1"]},"timeline":[{"kind":"published","date":"2026-10-14T14:29:04.851Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-16T15:31:52.556Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":29,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T13:35:59.636Z","stale":false,"partial":false}}