JVNDB-2026-006408

Vulnerability from jvndb - Published: 2026-04-24 17:56 - Updated:2026-04-24 17:56
Severity ?
5.4 (Medium) - cvssV3_0 - CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Summary
Apache ActiveMQ series improper validation of MQTT packets [AMQ-9810]
Details
Apache ActiveMQ series provided by The Apache Software Foundation does not properly validate the remaining length field of MQTT packets, which may lead to integer overflow and misinterpretation of MQTT packets.
  • Integer overflow or wraparound (CWE-190) - CVE-2025-66168, CVE-2026-40046
Gai Tanaka of Mitsui Bussan Secure Directions, Inc. reported this vulnerability in version 6.2.0 to the developer and IPA under Information Security Early Warning Partnership. JPCERT/CC coordinated with the developer to publish the advisory.
References
Impacted products
Show details on JVN DB website
To clipboard 

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-006408.html",
  "dc:date": "2026-04-24T17:56+09:00",
  "dcterms:issued": "2026-04-24T17:56+09:00",
  "dcterms:modified": "2026-04-24T17:56+09:00",
  "description": "Apache ActiveMQ series provided by The Apache Software Foundation does not properly validate the remaining length field of MQTT packets, which may lead to integer overflow and misinterpretation of MQTT packets.\u003ca href=\u0027https://cwe.mitre.org/data/definitions/190.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003cul\u003e\u003cli\u003eInteger overflow or wraparound (CWE-190) - CVE-2025-66168, CVE-2026-40046\u003c/li\u003e\u003c/ul\u003eGai Tanaka of Mitsui Bussan Secure Directions, Inc. reported this vulnerability in version 6.2.0 to the developer and IPA under Information Security Early Warning Partnership.\r\nJPCERT/CC coordinated with the developer to publish the advisory.",
  "link": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-006408.html",
  "sec:cpe": [
    {
      "#text": "cpe:/a:apache:activemq",
      "@product": "Apache ActiveMQ",
      "@vendor": "Apache Software Foundation",
      "@version": "2.2"
    },
    {
      "#text": "cpe:/a:apache:activemq_mqtt",
      "@product": "Apache ActiveMQ MQTT",
      "@vendor": "Apache Software Foundation",
      "@version": "2.2"
    }
  ],
  "sec:cvss": {
    "@score": "5.4",
    "@severity": "Medium",
    "@type": "Base",
    "@vector": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
    "@version": "3.0"
  },
  "sec:identifier": "JVNDB-2026-006408",
  "sec:references": [
    {
      "#text": "https://jvn.jp/en/jp/JVN20669184/index.html",
      "@id": "JVN#20669184",
      "@source": "JVN"
    },
    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2025-66168",
      "@id": "CVE-2025-66168",
      "@source": "CVE"
    },
    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2026-40046",
      "@id": "CVE-2026-40046",
      "@source": "CVE"
    },
    {
      "#text": "https://nvd.nist.gov/vuln/detail/CVE-2025-66168",
      "@id": "CVE-2025-66168",
      "@source": "NVD"
    },
    {
      "#text": "https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html",
      "@id": "CWE-Other",
      "@title": "No Mapping(CWE-Other)"
    }
  ],
  "title": "Apache ActiveMQ series improper validation of MQTT packets [AMQ-9810]"
}


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