SB2026050506 - IBM Control Center update for activemq-all

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Main Vulnerability Database SB2026050506

SB2026050506 - IBM Control Center update for activemq-all

Published: May 5, 2026

Security Bulletin ID SB2026050506
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2026-39304)

CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions

CVSSv4: 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


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper handling of TLSv1.3 KeyUpdate messages in ActiveMQ NIO SSL transports when processing client-triggered TLSv1.3 handshake KeyUpdates. A remote attacker can rapidly trigger KeyUpdate messages to cause a denial of service.

Only TLSv1.3 is vulnerable to out-of-memory exhaustion; earlier TLS versions may cause a connection hang instead.


Remediation

Install update from vendor's website.

References