Stack-based buffer overflow in rping in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53, when used with SNMP (aka HPOvNNM.HPOVSNMP) before 1.30.009 and MIB (aka HPOvNNM.HPOVMIB) before 1.30.009, allows remote attackers to execute arbitrary code or cause a denial of service via unknown vectors.