| Package | Affected versions | Patched versions |
|---|---|---|
| org.apache.activemq:activemq-all | ≥ 6.0.0, < 6.2.4 | 6.2.4 |
| org.apache.activemq:activemq-mqtt | ≥ 6.0.0, < 6.2.4 | 6.2.4 |
| org.apache.activemq:apache-activemq | ≥ 6.0.0, < 6.2.4 | 6.2.4 |
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.
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