CVE-2026-12665

IBM MQ versions 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 LTS, and 10.0.0.0 could allow a remote attacker to execute arbitrary code due to unsafe JNDI lookup processing when the IVT application is deployed.

IBM MQ 9.4.5.0 through 9.4.5.1 could allow an authenticated user to cause a denial of service by sending a specially crafted message that crashes consuming applications. The impact is on availability.

IBM MQ could allow an authenticated attacker to cause process instability due to an off-by-one buffer overflow when processing specially crafted object names. This may lead to service disruption.

IBM MQ contains a vulnerability that allows an authenticated attacker to cause a denial of service through a specially crafted message that triggers excessive memory operations during character set conversion.

IBM MQ could allow an authenticated attacker to trigger a minor out-of-bounds read when sending malformed compressed data, though the data is not disclosed and the request is rejected.

IBM MQ allows an authenticated attacker to cause a denial of service by sending a specially crafted asynchronous consume request that crashes the queue manager agent process.

IBM MQ allows an authenticated attacker to cause a denial of service due to improper validation of RFH2 message header fields in queued publish/subscribe operations.

IBM MQ allows an authenticated attacker to cause a denial of service by sending specially crafted multicast status messages that trigger a NULL pointer dereference.

IBM MQ allows an authenticated attacker to cause a limited denial of service and obtain very limited information about process memory layout due to an out-of-bounds read when processing a specially crafted client request.

IBM MQ allows an authenticated attacker to cause a denial of service due to improper validation of offset values in MQOPEN requests.