{"id":"CVE-2019-5432","aliases":["DEBIAN-CVE-2019-5432","EUVD-2019-0481","GHSA-wv67-9jq7-8r69","UBUNTU-CVE-2019-5432"],"status":"published","title":"Improper Input Validation and Buffer Over-read in mqtt-packet","description":"A specifically malformed MQTT Subscribe packet crashes MQTT Brokers using the mqtt-packet module versions \u003c 3.5.1, 4.0.0 - 4.1.3, 5.0.0 - 5.6.1, 6.0.0 - 6.1.2 for decoding.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01777,"percentile":0.78362,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125","CWE-126"],"published":"2019-05-06T16:48:23Z","modified":"2026-10-24T10:30:55Z","fixes":[{"ecosystem":"npm","package":"mqtt-packet","fixed_in":["3.5.1","4.1.3","5.6.1","6.1.2"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"node-mqtt-packet","fixed_in":["6.0.0-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"node-mqtt-packet","fixed_in":["6.0.0-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"node-mqtt-packet","fixed_in":["6.0.0-2"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"mqtt-packet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.1"}]}]},{"source":"ghsa","ecosystem":"npm","package":"mqtt-packet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.1.3"}]}]},{"source":"ghsa","ecosystem":"npm","package":"mqtt-packet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.0.0"},{"fixed":"5.6.1"}]}]},{"source":"ghsa","ecosystem":"npm","package":"mqtt-packet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0.0"},{"fixed":"6.1.2"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"node-mqtt-packet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"node-mqtt-packet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"node-mqtt-packet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.0-2"}]}]},{"source":"osv","ecosystem":"npm","package":"mqtt-packet","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.5.1"}]}]},{"source":"osv","ecosystem":"npm","package":"mqtt-packet","ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0"},{"fixed":"4.1.3"}]}]},{"source":"osv","ecosystem":"npm","package":"mqtt-packet","ranges":[{"type":"SEMVER","events":[{"introduced":"5.0.0"},{"fixed":"5.6.1"}]}]},{"source":"osv","ecosystem":"npm","package":"mqtt-packet","ranges":[{"type":"SEMVER","events":[{"introduced":"6.0.0"},{"fixed":"6.1.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"node-mqtt-packet","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.0-2"]}],"products":[{"vendor":"mqtt-packet_project","product":"mqtt-packet"}],"references":[{"url":"https://hackerone.com/reports/541354","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-5432","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-wv67-9jq7-8r69"},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-5432","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2019-5432","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-5432","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-5432","description":"A specifically malformed MQTT Subscribe packet crashes MQTT Brokers using the mqtt-packet module versions \u003c 3.5.1, 4.0.0 - 4.1.3, 5.0.0 - 5.6.1, 6.0.0 - 6.1.2 for decoding.","status":"published","published":"2019-05-06T16:48:23Z","modified":"2024-08-04T19:54:53.491Z","cwes":["CWE-126"],"updated_at":"2026-11-02T14:20:18.746972Z"}],"euvd":[{"id":"EUVD-2019-0481","description":"A specifically malformed MQTT Subscribe packet crashes MQTT Brokers using the mqtt-packet module versions \u003c 3.5.1, 4.0.0 - 4.1.3, 5.0.0 - 5.6.1, 6.0.0 - 6.1.2 for decoding.","status":"published","published":"2019-05-06T16:48:23Z","modified":"2024-08-04T19:54:53Z","updated_at":"2026-11-03T03:06:52.999682Z"}],"ghsa":[{"id":"GHSA-wv67-9jq7-8r69","title":"Improper Input Validation and Buffer Over-read in mqtt-packet","description":"A specifically malformed MQTT Subscribe packet crashes MQTT Brokers using the mqtt-packet module versions \u003c 3.5.1, 4.0.0 - 4.1.3, 5.0.0 - 5.6.1, 6.0.0 - 6.1.2 for decoding.","status":"published","published":"2019-05-14T04:02:45Z","modified":"2023-02-01T05:01:57Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-125","CWE-126"],"updated_at":"2026-11-02T14:36:30.61364Z"}],"nvd":[{"id":"CVE-2019-5432","description":"A specifically malformed MQTT Subscribe packet crashes MQTT Brokers using the mqtt-packet module versions \u003c 3.5.1, 4.0.0 - 4.1.3, 5.0.0 - 5.6.1, 6.0.0 - 6.1.2 for decoding.","status":"published","published":"2019-05-06T17:29:00.543Z","modified":"2026-06-17T02:37:40.693Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-126","CWE-125"],"updated_at":"2026-11-02T14:05:12.471695Z"}],"osv":[{"id":"CVE-2019-5432","description":"A specifically malformed MQTT Subscribe packet crashes MQTT Brokers using the mqtt-packet module versions \u003c 3.5.1, 4.0.0 - 4.1.3, 5.0.0 - 5.6.1, 6.0.0 - 6.1.2 for decoding.","status":"published","published":"2019-05-06T17:29:00.543Z","modified":"2026-10-24T10:30:55.893996966Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:12.675558Z"},{"id":"DEBIAN-CVE-2019-5432","description":"A specifically malformed MQTT Subscribe packet crashes MQTT Brokers using the mqtt-packet module versions \u003c 3.5.1, 4.0.0 - 4.1.3, 5.0.0 - 5.6.1, 6.0.0 - 6.1.2 for decoding.","status":"published","published":"2019-05-06T17:29:00.543Z","modified":"2026-09-21T07:00:43.146826019Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:32.221385Z"},{"id":"GHSA-wv67-9jq7-8r69","title":"Improper Input Validation and Buffer Over-read in mqtt-packet","description":"A specifically malformed MQTT Subscribe packet crashes MQTT Brokers using the mqtt-packet module versions \u003c 3.5.1, 4.0.0 - 4.1.3, 5.0.0 - 5.6.1, 6.0.0 - 6.1.2 for decoding.","status":"published","published":"2019-05-14T04:02:45Z","modified":"2023-11-08T04:01:36.103305Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-125","CWE-126"],"updated_at":"2026-11-02T15:46:59.131095Z"},{"id":"UBUNTU-CVE-2019-5432","description":"A specifically malformed MQTT Subscribe packet crashes MQTT Brokers using the mqtt-packet module versions \u003c 3.5.1, 4.0.0 - 4.1.3, 5.0.0 - 5.6.1, 6.0.0 - 6.1.2 for decoding.","status":"published","published":"2019-05-06T17:29:00Z","modified":"2025-10-24T04:47:27Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:21.741399Z"}]}}