The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

IBM MQ Appliance 9.3 LTS, 9.3 CD, and 9.4 LTS web console could allow an authenticated user to cause a denial-of-service when trace is enabled due to information being written into memory outside of the intended buffer size.

IBM MQ 9.1 LTS, 9.2 LTS, 9.3 LTS, 9.3 CD, 9.4 LTS, 9.4 CD, IBM MQ Appliance 9.3 LTS, 9.3 CD, 9.4 LTS, and IBM MQ for HPE NonStop 8.1.0 through 8.1.0.25 could allow an authenticated user to cause a denial-of-service due to messages with improperly set values.

IBM MQ Appliance 9.3 CD and LTS are vulnerable to a heap-based buffer overflow, caused by improper bounds checking. A remote authenticated attacker could overflow a buffer and execute arbitrary code on the system or cause the server to crash. IBM X-Force ID: 283137.

IBM MQ Appliance 9.3 LTS and 9.3 CD could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request to view arbitrary files on the system. IBM X-Force ID: 269536.

IBM MQ Appliance 9.3 CD could allow a local attacker to gain elevated privileges on the system, caused by improper validation of security keys. IBM X-Force ID: 269535.

IBM MQ 9.0 LTS, 9.1 LTS, 9.2 LTS, 9.3 LTS, 9.2 CD, and 9.3 CD and IBM MQ Appliance 9.2 LTS, 9.3 LTS, 9.2 CD, and 9.2 LTS, under certain configurations, is vulnerable to a denial of service attack caused by an error processing messages. IBM X-Force ID: 250397.

IBM MQ 9.2 CD, 9.2 LTS, 9.3 CD, and 9.3 LTS could allow a remote attacker to cause a denial of service due to an error processing invalid data. IBM X-Force ID: 248418.

IBM MQ Clients 9.2 CD, 9.3 CD, and 9.3 LTS are vulnerable to a denial of service attack when processing configuration files. IBM X-Force ID: 244216.

IBM MQ 9.2 CD, 9.2 LTS, 9.3 CD, and 9.3 LTS could allow an authenticated attacker with authorization to craft messages to cause a denial of service. IBM X-Force ID: 241354.