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2 vulnerabilities found for Apache ActiveMQ MQTT Module by Apache Software Foundation

CVE-2025-66168 (GCVE-0-2025-66168)

Vulnerability from nvd – Published: 2026-03-04 08:45 – Updated: 2026-03-04 09:15
VLAI?
Title
Apache ActiveMQ, Apache ActiveMQ All Module, Apache ActiveMQ MQTT Module: MQTT control packet remaining length field is not properly validated
Summary
Apache ActiveMQ does not properly validate the remaining length field which may lead to an overflow during the decoding of malformed packets. When this integer overflow occurs, ActiveMQ may incorrectly compute the total Remaining Length and subsequently misinterpret the payload as multiple MQTT control packets which makes the broker susceptible to unexpected behavior when interacting with non-compliant clients. This behavior violates the MQTT v3.1.1 specification, which restricts Remaining Length to a maximum of 4 bytes. The scenario occurs on established connections after the authentication process. Brokers that are not enabling mqtt transport connectors are not impacted. This issue affects Apache ActiveMQ: before 5.19.2, 6.0.0 to 6.1.8, and 6.2.0 Users are recommended to upgrade to version 5.19.2, 6.1.9, or 6.2.1, which fixes the issue.
Severity ?
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache ActiveMQ Affected: 0 , < 5.19.2 (semver)
Affected: 6.0.0 , < 6.1.9 (semver)
Affected: 6.2.0 , < 6.2.1 (semver)
Create a notification for this product.
    Apache Software Foundation Apache ActiveMQ All Module Affected: 0 , < 5.19.2 (semver)
Affected: 6.0.0 , < 6.1.9 (semver)
Affected: 6.2.0 , < 6.2.1 (semver)
Create a notification for this product.
    Apache Software Foundation Apache ActiveMQ MQTT Module Affected: 0 , < 5.19.2 (semver)
Affected: 6.0.0 , < 6.1.9 (semver)
Affected: 6.2.0 , < 6.2.1 (semver)
Create a notification for this product.
Credits
Gai Tanaka <641.work123@gmail.com>
Show details on NVD website
To clipboard 

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CVE-2025-66168 (GCVE-0-2025-66168)

Vulnerability from cvelistv5 – Published: 2026-03-04 08:45 – Updated: 2026-03-04 09:15
VLAI?
Title
Apache ActiveMQ, Apache ActiveMQ All Module, Apache ActiveMQ MQTT Module: MQTT control packet remaining length field is not properly validated
Summary
Apache ActiveMQ does not properly validate the remaining length field which may lead to an overflow during the decoding of malformed packets. When this integer overflow occurs, ActiveMQ may incorrectly compute the total Remaining Length and subsequently misinterpret the payload as multiple MQTT control packets which makes the broker susceptible to unexpected behavior when interacting with non-compliant clients. This behavior violates the MQTT v3.1.1 specification, which restricts Remaining Length to a maximum of 4 bytes. The scenario occurs on established connections after the authentication process. Brokers that are not enabling mqtt transport connectors are not impacted. This issue affects Apache ActiveMQ: before 5.19.2, 6.0.0 to 6.1.8, and 6.2.0 Users are recommended to upgrade to version 5.19.2, 6.1.9, or 6.2.1, which fixes the issue.
Severity ?
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache ActiveMQ Affected: 0 , < 5.19.2 (semver)
Affected: 6.0.0 , < 6.1.9 (semver)
Affected: 6.2.0 , < 6.2.1 (semver)
Create a notification for this product.
    Apache Software Foundation Apache ActiveMQ All Module Affected: 0 , < 5.19.2 (semver)
Affected: 6.0.0 , < 6.1.9 (semver)
Affected: 6.2.0 , < 6.2.1 (semver)
Create a notification for this product.
    Apache Software Foundation Apache ActiveMQ MQTT Module Affected: 0 , < 5.19.2 (semver)
Affected: 6.0.0 , < 6.1.9 (semver)
Affected: 6.2.0 , < 6.2.1 (semver)
Create a notification for this product.
Credits
Gai Tanaka <641.work123@gmail.com>
Show details on NVD website
To clipboard 

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