Buffer overflow in the mcpq daemon in F5 BIG-IP systems 10.x before 10.2.4 HF12 11.x before 11.2.1 HF15 11.3.x 11.4.x before 11.4.1 HF9 11.5.x before 11.5.2 HF1 and 11.6.0 before HF4 and Enterprise Manager 2.1.0 through 2.3.0 and 3.x before 3.1.1 HF5 allows remote authenticated administrators to cause a denial of service via unspecified vectors.