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3 vulnerabilities found for Apache ActiveMQ MQTT by Apache Software Foundation

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 

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  "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.",
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  "sec:references": [
    {
      "#text": "https://jvn.jp/en/jp/JVN20669184/index.html",
      "@id": "JVN#20669184",
      "@source": "JVN"
    },
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      "@id": "CVE-2025-66168",
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    },
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      "@id": "CVE-2026-40046",
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    },
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      "#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]"
}

CVE-2026-40046 (GCVE-0-2026-40046)

Vulnerability from nvd – Published: 2026-04-09 15:58 – Updated: 2026-04-10 19:41
VLAI?
Title
Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT: Missing fix for CVE-2025-66168: MQTT control packet remaining length field is not properly validated
Summary
Integer Overflow or Wraparound vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT. The fix for "CVE-2025-66168: MQTT control packet remaining length field is not properly validated" was only applied to 5.19.2 (and future 5.19.x) releases but was missed for all 6.0.0+ versions. This issue affects Apache ActiveMQ: from 6.0.0 before 6.2.4; Apache ActiveMQ All: from 6.0.0 before 6.2.4; Apache ActiveMQ MQTT: from 6.0.0 before 6.2.4. Users are recommended to upgrade to version 6.2.4 or a 5.19.x version starting with 5.19.2 or later (currently latest is 5.19.5), which fixes the issue.
Severity ?
No CVSS data available.
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache ActiveMQ Affected: 6.0.0 , < 6.2.4 (semver)
Create a notification for this product.
Credits
Adrien Bernard
Show details on NVD website
To clipboard 

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CVE-2026-40046 (GCVE-0-2026-40046)

Vulnerability from cvelistv5 – Published: 2026-04-09 15:58 – Updated: 2026-04-10 19:41
VLAI?
Title
Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT: Missing fix for CVE-2025-66168: MQTT control packet remaining length field is not properly validated
Summary
Integer Overflow or Wraparound vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT. The fix for "CVE-2025-66168: MQTT control packet remaining length field is not properly validated" was only applied to 5.19.2 (and future 5.19.x) releases but was missed for all 6.0.0+ versions. This issue affects Apache ActiveMQ: from 6.0.0 before 6.2.4; Apache ActiveMQ All: from 6.0.0 before 6.2.4; Apache ActiveMQ MQTT: from 6.0.0 before 6.2.4. Users are recommended to upgrade to version 6.2.4 or a 5.19.x version starting with 5.19.2 or later (currently latest is 5.19.5), which fixes the issue.
Severity ?
No CVSS data available.
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache ActiveMQ Affected: 6.0.0 , < 6.2.4 (semver)
Create a notification for this product.
Credits
Adrien Bernard
Show details on NVD website
To clipboard 

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