Heap-based buffer overflow in OvWebHelp.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 Topic parameter.
CVE-2009-4178
NONECVSS 0.09.0▲Weaponized
EchelonGraph scoreLOW confidence
Score elevated to 9.0 because EPSS predicts 86% probability of exploitation within the next 30 days (top 0.6% of all CVEs). Confidence: see factors.
Triggered by: EPSS exploit prediction ≥85%
Sources: epss
0.0
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
- High exploitation likelihood — EPSS 74%
CISA-KEV: Not listedEPSS: 74%CVSS: —Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 9.0(low)
- EPSS
- 99.4%
- KEV
- Not listed
Published
December 10, 2009
Last Modified
April 23, 2026
References (14)
- hp-security-alert@hphttp://dvlabs.tippingpoint.com/advisory/TPTI-09-11
- hp-security-alert@hphttp://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01950877
- hp-security-alert@hphttp://marc.info/?l=bugtraq&m=126046355120442&w=2
- hp-security-alert@hphttp://www.securityfocus.com/archive/1/508354/100/0/threaded
- hp-security-alert@hphttp://www.securityfocus.com/bid/37261
- hp-security-alert@hphttp://www.securityfocus.com/bid/37340
- hp-security-alert@hphttps://exchange.xforce.ibmcloud.com/vulnerabilities/54659
- af854a3a-2127-422b-91ae-364da2661108http://dvlabs.tippingpoint.com/advisory/TPTI-09-11
- af854a3a-2127-422b-91ae-364da2661108http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01950877
- af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=bugtraq&m=126046355120442&w=2
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/508354/100/0/threaded
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/37261
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/37340
- af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/54659
Related CVEs(same CWE)
Same CWE
10 shownCWE-119
Frequently asked(4)
What is CVE-2009-4178?
CVE-2009-4178 is a none vulnerability published on December 10, 2009. Heap-based buffer overflow in OvWebHelp.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 Topic parameter.
When was CVE-2009-4178 disclosed?
CVE-2009-4178 was first published in the National Vulnerability Database on December 10, 2009, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2009-4178 actively exploited?
CVE-2009-4178 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2009-4178?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-4178, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
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