How severe is CVE-2009-4177?

CVE-2009-4177 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2009-4177 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-4177?

CVE-2009-4177 primarily affects Hp Openview Network Node Manager. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-4177?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2009-4177 published?

CVE-2009-4177 was published on 2009-12-10 and last updated on 2026-06-16.

CVE-2009-4177

CVE-2009-4177 is a critical-severity vulnerability in Hp Openview Network Node Manager with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 13% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 13% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Hp Openview Network Node Manager
Published: 2009-12-10
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2009-4177?: 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.
How severe is CVE-2009-4177?: CVE-2009-4177 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2009-4177 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-4177?: CVE-2009-4177 primarily affects Hp Openview Network Node Manager. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-4177?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2009-4177 published?: CVE-2009-4177 was published on 2009-12-10 and last updated on 2026-06-16.

References

Affected products (12)

cpe:2.3:a:hp:openview_network_node_manager:7.0.1:*:hp_ux:*:*:*:*:*
cpe:2.3:a:hp:openview_network_node_manager:7.0.1:*:linux:*:*:*:*:*
cpe:2.3:a:hp:openview_network_node_manager:7.0.1:*:solaris:*:*:*:*:*
cpe:2.3:a:hp:openview_network_node_manager:7.0.1:*:windows:*:*:*:*:*
cpe:2.3:a:hp:openview_network_node_manager:7.51:-:hp-ux:*:*:*:*:*
cpe:2.3:a:hp:openview_network_node_manager:7.51:-:linux:*:*:*:*:*
cpe:2.3:a:hp:openview_network_node_manager:7.51:-:solaris:*:*:*:*:*
cpe:2.3:a:hp:openview_network_node_manager:7.51:-:windows:*:*:*:*:*
cpe:2.3:a:hp:openview_network_node_manager:7.53:-:hp-ux:*:*:*:*:*
cpe:2.3:a:hp:openview_network_node_manager:7.53:-:linux:*:*:*:*:*
cpe:2.3:a:hp:openview_network_node_manager:7.53:-:solaris:*:*:*:*:*
cpe:2.3:a:hp:openview_network_node_manager:7.53:-:windows:*:*:*:*:*

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