{"id":"CVE-2015-8023","url":"https://www.cyber-defence.io/tools/cve/CVE-2015-8023","generatedAt":"2026-10-27T18:47:26.356Z","title":"The server implementation of the EAP-MSCHAPv2 protocol in the eap-mschapv2 plugin in strongSwan 4.2.12 through 5.x before 5.3.4 does not properly validate local state, which allows remote attackers to bypass authentication via an empty Success message…","description":"The server implementation of the EAP-MSCHAPv2 protocol in the eap-mschapv2 plugin in strongSwan 4.2.12 through 5.x before 5.3.4 does not properly validate local state, which allows remote attackers to bypass authentication via an empty Success message in response to an initial Challenge message.","published":"2015-11-18T16:59:08.000Z","lastModified":"2026-06-17T00:33:53.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":5,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N"},"cwe":["CWE-20","CWE-264"],"affected":["canonical/ubuntu linux","strongswan/strongswan"],"epss":{"score":0.02582,"percentile":0.85118,"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 (2.58%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00025.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-updates/2015-11/msg00139.html","source":"cve@mitre.org"},{"url":"http://www.debian.org/security/2015/dsa-3398","source":"cve@mitre.org"},{"url":"http://www.securityfocus.com/bid/84947","source":"cve@mitre.org"},{"url":"http://www.ubuntu.com/usn/USN-2811-1","source":"cve@mitre.org"},{"url":"https://www.strongswan.org/blog/2015/11/16/strongswan-vulnerability-%28cve-2015-8023%29.html","source":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00025.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-updates/2015-11/msg00139.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.debian.org/security/2015/dsa-3398","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/84947","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.ubuntu.com/usn/USN-2811-1","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.strongswan.org/blog/2015/11/16/strongswan-vulnerability-%28cve-2015-8023%29.html","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2015-8023","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."}