CVE-2009-4176

NONECVSS 0.0Elevated
0.0
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No confirmed exploitation signals yet
CISA-KEV: Not listedEPSS: 12%CVSS: —Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Multiple heap-based buffer overflows in ovsessionmgr.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 to ovlogin.exe.

CVSS v3
—
EG Score
0.0(none)
EPSS
95.6%
KEV
Not listed

Published

December 10, 2009

Last Modified

April 23, 2026

References (14)

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 4× in last 7d / 34× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:23 UTCEPSS rescore
  2. 2026-07-05 02:26 UTCEPSS rescore
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  4. 2026-07-01 15:02 UTCEPSS rescore
  5. 2026-06-30 23:19 UTCEPSS rescore
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  10. 2026-06-25 13:46 UTCEPSS rescore
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  14. 2026-06-23 21:29 UTCEPSS rescore
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  16. 2026-06-22 14:22 UTCEPSS rescore
  17. 2026-06-22 14:22 UTCEPSS rescore
  18. 2026-06-21 14:53 UTCEPSS rescore
  19. 2026-06-21 01:56 UTCEPSS rescore
  20. 2026-06-21 01:56 UTCEPSS rescore
  21. 2026-06-18 17:49 UTCEPSS rescore
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  1. 2026-06-16 17:49 UTCEPSS rescore
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  3. 2026-06-14 23:14 UTCEPSS rescore
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  5. 2026-06-13 22:57 UTCEPSS rescore
  6. 2026-06-12 23:08 UTCEPSS rescore
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  8. 2026-06-10 22:14 UTCEPSS rescore
  9. 2026-06-10 13:17 UTCEPSS rescore
  10. 2026-06-07 15:22 UTCEPSS rescore
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  12. 2026-06-06 13:44 UTCEPSS rescore
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  18. 2026-06-04 13:09 UTCEPSS rescore
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  20. 2026-06-02 20:10 UTCEPSS rescore
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  22. 2026-06-01 13:49 UTCEPSS rescore
  23. 2026-06-01 13:49 UTCEPSS rescore
  24. 2026-05-31 22:28 UTCEPSS rescore
  25. 2026-05-31 22:28 UTCEPSS rescore
  26. 2026-05-31 00:13 UTCEPSS rescore
  27. 2026-05-31 00:13 UTCEPSS rescore
  28. 2026-05-30 14:21 UTCEG score recompute
  29. 2026-05-30 14:21 UTCGHSA enrichment
  30. 2026-05-29 13:40 UTCEPSS rescore
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  36. 2026-05-26 13:41 UTCEPSS rescore
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  38. 2026-05-26 07:16 UTCEPSS rescore
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  40. 2026-05-24 16:43 UTCEPSS rescore
  41. 2026-05-22 21:15 UTCEPSS rescore
  42. 2026-05-22 21:15 UTCEPSS rescore
  43. 2026-05-20 22:37 UTCEPSS rescore
  44. 2026-05-20 22:37 UTCEPSS rescore
  45. 2026-05-20 11:21 UTCEPSS rescore
  46. 2026-05-20 11:20 UTCEPSS rescore
  47. 2026-05-18 21:29 UTCEPSS rescore

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Frequently asked(4)

What is CVE-2009-4176?
CVE-2009-4176 is a none vulnerability published on December 10, 2009. Multiple heap-based buffer overflows in ovsessionmgr.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 to ovlogin.exe.
When was CVE-2009-4176 disclosed?
CVE-2009-4176 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-2009-4176 actively exploited?
CVE-2009-4176 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 95.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
How do I remediate CVE-2009-4176?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-4176, 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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