CVE-2009-4177: HP OpenView Network Node Manager

High severity, CVSS 10.0. EPSS: 13.5% chance of exploitation in the next 30 days.

Buffer overflow in webappmon.exe in HP OpenView Network Node Manager (OV NNM) 7.01, 7.51, and 7.53 allows remote attackers to execute arbitrary code via a long HTTP Host header.

Affected products

• HP OpenView Network Node Manager: version 7.0.1 only; version 7.51 only; version 7.53 only

Published 2009-12-10. Last modified 2026-06-16.