Stack-based buffer overflow in mchan.dll in the agent in HPE LoadRunner 11.52 through patch 3, 12.00 through patch 1, 12.01 through patch 3, 12.02 through patch 2, and 12.50 through patch 3 and Performance Center 11.52 through patch 3, 12.00 through patch 1, 12.01 through patch 3, 12.20 through patch 2, and 12.50 through patch 1 allows remote attackers to execute arbitrary code via a long -server_name value, aka ZDI-CAN-3516.