CVE-2009-4004

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-02. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

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

Buffer overflow in the kvm_vcpu_ioctl_x86_setup_mce function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.32-rc7 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a KVM_X86_SETUP_MCE IOCTL request that specifies a large number of Machine Check Exception (MCE) banks.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
32.6%
KEV
Not listed

Published

November 20, 2009

Last Modified

April 23, 2026

Advisory Details (4)

Auto-updated May 30, 2026
No patch confirmed yet.
generic
http://www.securityfocus.com/bid/37035
generic

About Secunia Research | Flexera

http://secunia.com/advisories/37357
generic

IBM X-Force Exchange

https://exchange.xforce.ibmcloud.com/vulnerabilities/54302
generic

VUPEN Security - Vulnerability Research and Intelligence

http://www.vupen.com/english/advisories/2009/3267

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 42× 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
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  1. 2026-06-19 19:22 UTCEPSS rescore
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  3. 2026-06-18 17:49 UTCEPSS rescore
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  9. 2026-06-15 17:44 UTCEPSS rescore
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  20. 2026-06-06 13:44 UTCEPSS rescore
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  25. 2026-06-05 06:07 UTCEPSS rescore
  26. 2026-06-04 13:09 UTCEPSS rescore
  27. 2026-06-04 13:09 UTCEPSS rescore
  28. 2026-06-01 13:49 UTCEPSS rescore
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  30. 2026-05-31 22:28 UTCEPSS rescore
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  32. 2026-05-31 00:13 UTCEPSS rescore
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  34. 2026-05-30 14:34 UTCEG score recompute
  35. 2026-05-30 14:34 UTCGHSA enrichment
  36. 2026-05-29 13:40 UTCEPSS rescore
  37. 2026-05-28 13:42 UTCEPSS rescore
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  39. 2026-05-28 13:42 UTCEPSS rescore
  40. 2026-05-27 13:38 UTCEPSS rescore
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  42. 2026-05-26 13:41 UTCEPSS rescore
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  44. 2026-05-26 07:16 UTCEPSS rescore
  45. 2026-05-26 07:16 UTCEPSS rescore
  46. 2026-05-24 16:43 UTCEPSS rescore
  47. 2026-05-22 21:15 UTCEPSS rescore
  48. 2026-05-22 21:15 UTCEPSS rescore
  49. 2026-05-20 22:37 UTCEPSS rescore
  50. 2026-05-20 22:37 UTCEPSS rescore
  51. 2026-05-20 11:21 UTCEPSS rescore
  52. 2026-05-20 11:20 UTCEPSS rescore
  53. 2026-05-18 21:29 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2009-4004?
CVE-2009-4004 is a high vulnerability published on November 20, 2009. Buffer overflow in the kvmvcpuioctlx86setupmce function in arch/x86/kvm/x86.c in the KVM subsystem in the Linux kernel before 2.6.32-rc7 allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a KVMX86SETUPMCE IOCTL request that specifies a large number…
When was CVE-2009-4004 disclosed?
CVE-2009-4004 was first published in the National Vulnerability Database on November 20, 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-2009-4004 actively exploited?
CVE-2009-4004 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 32.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2009-4004?
CVE-2009-4004 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2009-4004?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-4004, 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.

Dependency Blast Radius

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