Impact
This vulnerability is a buffer overflow that arises when IBM MQ processes MQOPEN requests containing improperly validated offset values. An authenticated attacker can trigger the overflow, causing the MQ service to crash and resulting in a denial of service. The weakness corresponds to CWE-120.
Affected Systems
Affected products are IBM MQ Advanced container images and IBM MQ Operator. The CI versions impacted include MQ Advanced image 10.0.1.0‑r1, 10.0.0.5‑r2, and 9.4.0.26‑r2. Operator releases v4.1.0, v4.0.5, and v3.2.30 contain components that rely on those images and are thus susceptible.
Risk and Exploitability
The CVSS score of 6.5 indicates medium severity. EPSS is not available and the vulnerability is not listed in the CISA KEV catalog. Exploitation requires authenticated access to the MQ instance and the ability to submit MQOPEN requests; the container image hosts the vulnerable logic. Attackers would therefore need valid credentials against the MQ broker to leverage this flaw, making the risk moderate but non‑negligible for environments with broad authorization.
OpenCVE Enrichment