{"id":"CVE-2019-11555","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-11555","generatedAt":"2026-10-28T22:21:52.275Z","title":"This could result in process termination due to a NULL pointer dereference (denial of service).","description":"The EAP-pwd implementation in hostapd (EAP server) before 2.8 and wpa_supplicant (EAP peer) before 2.8 does not validate fragmentation reassembly state properly for a case where an unexpected fragment could be received. This could result in process termination due to a NULL pointer dereference (denial of service). This affects eap_server/eap_server_pwd.c and eap_peer/eap_pwd.c.","published":"2019-04-26T22:29:00.000Z","lastModified":"2026-06-17T02:13:10.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":5.9,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-476"],"affected":["w1.fi/hostapd","w1.fi/wpa supplicant"],"epss":{"score":0.03252,"percentile":0.88273,"date":"2026-10-27","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 (3.25%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://www.openwall.com/lists/oss-security/2019/04/26/1","tags":["Mailing List","Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html","source":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5T7G763UECWR7FQXOJVL67PW7C5A3SA4/","source":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DJKZHAT5KPUN26JL77EUH563GAH5XZ5C/","source":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IQ6P2GI5GSXRNLNIUNPARFZQVDEIGVZD/","source":"cve@mitre.org"},{"url":"https://seclists.org/bugtraq/2019/May/40","source":"cve@mitre.org"},{"url":"https://seclists.org/bugtraq/2019/May/64","source":"cve@mitre.org"},{"url":"https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc","source":"cve@mitre.org"},{"url":"https://security.gentoo.org/glsa/201908-25","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3969-1/","source":"cve@mitre.org"},{"url":"https://usn.ubuntu.com/3969-2/","source":"cve@mitre.org"},{"url":"https://w1.fi/security/2019-5/","tags":["Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-with-unexpected-fragment.txt","tags":["Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://www.debian.org/security/2019/dsa-4450","source":"cve@mitre.org"},{"url":"https://www.openwall.com/lists/oss-security/2019/04/18/6","tags":["Mailing List","Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2019/04/26/1","tags":["Mailing List","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5T7G763UECWR7FQXOJVL67PW7C5A3SA4/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DJKZHAT5KPUN26JL77EUH563GAH5XZ5C/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IQ6P2GI5GSXRNLNIUNPARFZQVDEIGVZD/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://seclists.org/bugtraq/2019/May/40","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://seclists.org/bugtraq/2019/May/64","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/201908-25","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3969-1/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/3969-2/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://w1.fi/security/2019-5/","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-with-unexpected-fragment.txt","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2019/dsa-4450","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.openwall.com/lists/oss-security/2019/04/18/6","tags":["Mailing List","Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-11555","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."}