{"id":"CVE-2026-101003","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-101003","generatedAt":"2026-10-27T23:45:10.291Z","title":"A weakness has been identified in Cesanta Mongoose up to 7.21.","description":"A weakness has been identified in Cesanta Mongoose up to 7.21. Affected by this vulnerability is the function fn of the file tutorials/mqtt/mqtt-server/main.c of the component MQTT Broker. Executing a manipulation can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 7.22 addresses this issue. This patch is called a9df523f76f43a38bd53b4232b9cfd4c16869e71. Upgrading the affected component is advised.","published":"2026-09-28T06:16:31.000Z","lastModified":"2026-10-01T15:17:20.000Z","status":"Deferred","sourceIdentifier":"cna@vuldb.com","cvss":{"version":"4.0","score":5.5,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-119","CWE-121"],"affected":[],"epss":{"score":0.00462,"percentile":0.39812,"date":"2026-10-26","history":[{"date":"2026-09-28","score":0.00462,"percentile":0.37575}]},"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 (0.46%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-28T06:16:31.000Z","detail":{"score":"5.5","severity":"MEDIUM","publishedAt":"2026-09-28T06:16:31.310Z"},"summary":"New CVE, medium severity (CVSS 5.5)."}],"references":[{"url":"https://github.com/cesanta/mongoose/","source":"cna@vuldb.com"},{"url":"https://github.com/cesanta/mongoose/commit/a9df523f76f43a38bd53b4232b9cfd4c16869e71","source":"cna@vuldb.com"},{"url":"https://github.com/cesanta/mongoose/releases/tag/7.22","source":"cna@vuldb.com"},{"url":"https://vuldb.com/cve/CVE-2026-101003","source":"cna@vuldb.com"},{"url":"https://vuldb.com/submit/920005","source":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/410873","source":"cna@vuldb.com"},{"url":"https://vuldb.com/vuln/410873/cti","source":"cna@vuldb.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-101003","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."}