#VU125790 Integer overflow in ActiveMQ - CVE-2026-40046
Published: April 10, 2026
Vulnerability identifier: #VU125790
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-40046
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
ActiveMQ
ActiveMQ
Software vendor:
Apache Foundation
Apache Foundation
Description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to integer overflow or wraparound in the MQTT control packet remaining length field handling when parsing MQTT control packets. A remote attacker can send a specially crafted MQTT control packet to cause a denial of service.
Remediation
Install security update from vendor's website.