{"id":"CVE-2019-11779","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-11779","generatedAt":"2026-10-29T00:58:54.189Z","title":"In Eclipse Mosquitto 1.5.0 to 1.6.5 inclusive, if a malicious MQTT client sends a SUBSCRIBE packet containing a topic that consists of approximately 65400 or more '/' characters, i.e. the topic hierarchy separator, then a stack overflow will occur.","description":"In Eclipse Mosquitto 1.5.0 to 1.6.5 inclusive, if a malicious MQTT client sends a SUBSCRIBE packet containing a topic that consists of approximately 65400 or more '/' characters, i.e. the topic hierarchy separator, then a stack overflow will occur.","published":"2019-09-19T14:15:11.000Z","lastModified":"2026-06-17T02:13:38.000Z","status":"Modified","sourceIdentifier":"emo@eclipse.org","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-754","CWE-674"],"affected":["eclipse/mosquitto","canonical/ubuntu linux","opensuse/backports sle","opensuse/leap","fedoraproject/fedora","debian/debian linux"],"epss":{"score":0.02742,"percentile":0.86096,"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 (2.74%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00077.html","tags":["Mailing List","Third Party Advisory"],"source":"emo@eclipse.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00008.html","tags":["Mailing List","Third Party Advisory"],"source":"emo@eclipse.org"},{"url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=551160","tags":["Vendor Advisory"],"source":"emo@eclipse.org"},{"url":"https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html","tags":["Mailing List","Third Party Advisory"],"source":"emo@eclipse.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D4WMHIM64Q35NGTR6R3ILZUL4MA4ANB5/","source":"emo@eclipse.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HFWQBNFTAVHPUYNGYO2TCPF5PCSWC2Z7/","source":"emo@eclipse.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWNVTFA2CKXERXRYPYE2YFTZP4GNBGYY/","source":"emo@eclipse.org"},{"url":"https://seclists.org/bugtraq/2019/Nov/25","tags":["Mailing List","Third Party Advisory"],"source":"emo@eclipse.org"},{"url":"https://usn.ubuntu.com/4137-1/","tags":["Third Party Advisory"],"source":"emo@eclipse.org"},{"url":"https://www.debian.org/security/2019/dsa-4570","tags":["Third Party Advisory"],"source":"emo@eclipse.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00077.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00008.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=551160","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D4WMHIM64Q35NGTR6R3ILZUL4MA4ANB5/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HFWQBNFTAVHPUYNGYO2TCPF5PCSWC2Z7/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWNVTFA2CKXERXRYPYE2YFTZP4GNBGYY/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://seclists.org/bugtraq/2019/Nov/25","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://usn.ubuntu.com/4137-1/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2019/dsa-4570","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-11779","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."}