Multiple heap-based buffer overflows in ovlogin.exe in HP OpenView Network Node Manager (OV NNM) 7.01, 7.51, and 7.53 allow remote attackers to execute arbitrary code via a long (1) userid or (2) passwd parameter.
Conclusion & alert: CVE-2009-3846 is rated High Risk (68.6/100): CVSS Critical severity, with high exploitation likelihood (EPSS 13.87%, 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 | 2026-06-15 | 25.63% | 13.87% | -11.76% |
| 2 | 2026-05-01 | 27.75% | 25.63% | -2.12% |
| 3 | 2025-05-03 | — | 27.75% | — |
Full EPSS history (14 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 | 7.0.1 | cpe:2.3:a:hp:openview_network_node_manager:7.0.1:*:hp_ux:*:*:*:*:* |
| hp | openview_network_node_manager | 7.0.1 | cpe:2.3:a:hp:openview_network_node_manager:7.0.1:*:linux:*:*:*:*:* |
| hp | openview_network_node_manager | 7.0.1 | cpe:2.3:a:hp:openview_network_node_manager:7.0.1:*:solaris:*:*:*:*:* |
| hp | openview_network_node_manager | 7.0.1 | cpe:2.3:a:hp:openview_network_node_manager:7.0.1:*:windows:*:*:*:*:* |
| hp | openview_network_node_manager | 7.51 | cpe:2.3:a:hp:openview_network_node_manager:7.51:-:hp-ux:*:*:*:*:* |
| hp | openview_network_node_manager | 7.51 | cpe:2.3:a:hp:openview_network_node_manager:7.51:-:linux:*:*:*:*:* |
| hp | openview_network_node_manager | 7.51 | cpe:2.3:a:hp:openview_network_node_manager:7.51:-:solaris:*:*:*:*:* |
| hp | openview_network_node_manager | 7.51 | cpe:2.3:a:hp:openview_network_node_manager:7.51:-:windows:*:*:*:*:* |
| hp | openview_network_node_manager | 7.53 | cpe:2.3:a:hp:openview_network_node_manager:7.53:-:hp-ux:*:*:*:*:* |
| hp | openview_network_node_manager | 7.53 | cpe:2.3:a:hp:openview_network_node_manager:7.53:-:linux:*:*:*:*:* |
| hp | openview_network_node_manager | 7.53 | cpe:2.3:a:hp:openview_network_node_manager:7.53:-:solaris:*:*:*:*:* |
| hp | openview_network_node_manager | 7.53 | cpe:2.3:a:hp:openview_network_node_manager:7.53:-:windows:*:*:*:*:* |