Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT vulnerable to Integer Overflow or Wraparound
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.apache.activemq:activemq-all | >= 6.0.0, < 6.2.4 | 6.2.4 |
| Java / Kotlin (Maven) | org.apache.activemq:activemq-mqtt | >= 6.0.0, < 6.2.4 | 6.2.4 |
| Java / Kotlin (Maven) | org.apache.activemq:apache-activemq | >= 6.0.0, < 6.2.4 | 6.2.4 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N- Weakness (CWE)
CWE-190- Platform
- Java / Kotlin (Maven)
- Package
org.apache.activemq:activemq-all, org.apache.activemq:activemq-mqtt, org.apache.activemq:apache-activemq- Disclosed
- 09.04.2026
- Updated
- 11.10.2026 12:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-xvqc-pp94-fmpx - CC BY 4.0
Vulnerability history: org.apache.activemq:activemq-all
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 11
- First → latest
- 03.2026 06.2026
- Without a fix
- 0
- Exploited in attacks
- 1
Severity breakdown
- High 6
- Medium 5
Disclosures per year
- 2026: 11
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Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT vulnerable to Integer Overflow or Wraparound this entry
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