{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-101003",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-101003",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-28T05:30:14.021Z",
    "updatedAt": "2026-10-01T14:06:48.183Z",
    "importedAt": "2026-10-24T01:57:50.502Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Cesanta Mongoose MQTT Broker main.c fn stack-based overflow",
      "summary": "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.",
      "affected": [
        {
          "vendor": "Cesanta",
          "product": "Mongoose",
          "versions": [
            {
              "version": "7.0",
              "status": "affected"
            },
            {
              "version": "7.1",
              "status": "affected"
            },
            {
              "version": "7.2",
              "status": "affected"
            },
            {
              "version": "7.3",
              "status": "affected"
            },
            {
              "version": "7.4",
              "status": "affected"
            },
            {
              "version": "7.5",
              "status": "affected"
            },
            {
              "version": "7.6",
              "status": "affected"
            },
            {
              "version": "7.7",
              "status": "affected"
            },
            {
              "version": "7.8",
              "status": "affected"
            },
            {
              "version": "7.9",
              "status": "affected"
            },
            {
              "version": "7.10",
              "status": "affected"
            },
            {
              "version": "7.11",
              "status": "affected"
            },
            {
              "version": "7.12",
              "status": "affected"
            },
            {
              "version": "7.13",
              "status": "affected"
            },
            {
              "version": "7.14",
              "status": "affected"
            },
            {
              "version": "7.15",
              "status": "affected"
            },
            {
              "version": "7.16",
              "status": "affected"
            },
            {
              "version": "7.17",
              "status": "affected"
            },
            {
              "version": "7.18",
              "status": "affected"
            },
            {
              "version": "7.19",
              "status": "affected"
            },
            {
              "version": "7.20",
              "status": "affected"
            },
            {
              "version": "7.21",
              "status": "affected"
            },
            {
              "version": "7.22",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  }
}