Impact
An authenticated attacker can trigger an out‑of‑bounds read in IBM MQ when a specially crafted client request is processed, which can result in a limited denial of service and the disclosure of a small amount of information about the process memory layout. The flaw is classified as a heap‑based buffer overflow (CWE‑122). While the exposure does not provide full remote code execution, it can still impact availability and may aid attackers in building further exploits.
Affected Systems
The vulnerability affects IBM MQ Advanced container images and the IBM MQ Operator. Affected product versions include MQ Advanced 10.0.1.0‑r1 and 10.0.0.5‑r2, and operator releases v4.1.0, v4.0.5, and v3.2.30. These are the versions listed in IBM’s security bulletin and associated CPE entries.
Risk and Exploitability
The CVSS score is 5.4, indicating a moderate impact. The EPSS score is not available, and the vulnerability is not listed in CISA KEV. Exploitation requires authenticated access to the MQ system and is likely carried out over the network. Because the effect is limited to a denial of service and a small information disclosure, the overall risk is moderate but the exposure should be remediated promptly to prevent potential chaining with other weaknesses.
OpenCVE Enrichment