An issue was discovered on Supermicro BMC firmware in select X11, X12, H12, B12, X13, H13, and B13 motherboards (and CMM6 modules). An unauthenticated user can post crafted data to the interface that triggers a stack buffer overflow, and may lead to arbitrary remote code execution on a BMC.

Supermicro X11SSL-CF HW Rev 1.01, BMC firmware v1.63 was discovered to contain insecure permissions.

Buffer Overflow vulnerability in Supermicro motherboard X12DPG-QR 1.4b allows local attackers to hijack control flow via manipulation of SmcSecurityEraseSetupVar variable.

On Supermicro X10 and X11 products, a client's access privileges may be transferred to a different client that later has the same socket file descriptor number. In opportunistic circumstances, an attacker can simply connect to the virtual media service, and then connect virtual USB devices to the server managed by the BMC.

On Supermicro H11, H12, M11, X9, X10, and X11 products, a combination of encryption and authentication problems in the virtual media service allows capture of BMC credentials and data transferred over virtual media devices. Attackers can use captured credentials to connect virtual USB devices to the server managed by the BMC.