Stack-based buffer overflow in ovutil.dll in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53 allows remote attackers to execute arbitrary code via a long COOKIE variable.
Conclusion & alert: CVE-2011-0264 is rated High Risk (68.7/100): CVSS Critical severity, with high exploitation likelihood (EPSS 25.33%, 96th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-06 | 34.62% | 25.33% | -9.29% |
| 2 | 2026-04-08 | 49.38% | 34.62% | -14.76% |
| 3 | 2025-03-30 | — | 49.38% | — |
Full EPSS history (15 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 10.0 | 2.0 | HIGH |
|
10.0 | 10.0 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| hp | openview_network_node_manager | 7.51 | cpe:2.3:a:hp:openview_network_node_manager:7.51:*:*:*:*:*:*:* |
| hp | openview_network_node_manager | 7.53 | cpe:2.3:a:hp:openview_network_node_manager:7.53:*:*:*:*:*:*:* |