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CVE-2026-40046

Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT: Missing fix for CVE-2025-66168: MQTT control packet remaining length field is not properly validated PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
Apache Software Foundation / Apache ActiveMQaffected 6.0.0 before 6.2.4
Apache Software Foundation / Apache ActiveMQ Allaffected 6.0.0 before 6.2.4
Apache Software Foundation / Apache ActiveMQ MQTTaffected 6.0.0 before 6.2.4

CWE

CWE-190

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.