CVE-2009-4011

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 40% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.1Exploit: NoneExposed: 0

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

dtc-xen 0.5.x before 0.5.4 suffers from a race condition where an attacker could potentially get a bash access as xenXX user on the dom0, and then access a potentially reuse an already opened VPS console.

CVSS v3
8.1
EG Score
8.1(medium)
EPSS
57.8%
KEV
Not listed

Published

November 9, 2019

Last Modified

November 21, 2024

References (6)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 43× 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. 2026-07-11 08:22 UTCEPSS rescore
  2. 2026-07-11 08:22 UTCEPSS rescore
  3. 2026-07-09 19:04 UTCEPSS rescore
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  10. 2026-07-04 06:27 UTCEPSS rescore
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  12. 2026-06-30 23:19 UTCEPSS rescore
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  15. 2026-06-28 14:03 UTCEPSS rescore
  16. 2026-06-28 04:52 UTCEPSS rescore
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  18. 2026-06-27 03:05 UTCEPSS rescore
  19. 2026-06-25 13:46 UTCEPSS rescore
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  21. 2026-06-24 14:02 UTCEPSS rescore
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  23. 2026-06-23 21:29 UTCEPSS rescore
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  1. 2026-06-22 14:22 UTCEPSS rescore
  2. 2026-06-21 14:53 UTCEPSS rescore
  3. 2026-06-21 01:56 UTCEPSS rescore
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  5. 2026-06-19 19:22 UTCEPSS rescore
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  7. 2026-06-18 17:49 UTCEPSS rescore
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  9. 2026-06-17 17:49 UTCEPSS rescore
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  11. 2026-06-16 17:49 UTCEPSS rescore
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  16. 2026-06-13 22:57 UTCEPSS rescore
  17. 2026-06-12 23:08 UTCEPSS rescore
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  19. 2026-06-10 22:14 UTCEPSS rescore
  20. 2026-06-10 13:17 UTCEPSS rescore
  21. 2026-06-08 14:13 UTCEPSS rescore
  22. 2026-06-07 15:22 UTCEPSS rescore
  23. 2026-06-07 15:22 UTCEPSS rescore
  24. 2026-06-06 13:44 UTCEPSS rescore
  25. 2026-06-06 13:44 UTCEPSS rescore
  26. 2026-06-06 13:44 UTCEPSS rescore
  27. 2026-06-05 22:44 UTCEPSS rescore
  28. 2026-06-05 22:44 UTCEPSS rescore
  29. 2026-06-05 06:07 UTCEPSS rescore
  30. 2026-06-04 13:09 UTCEPSS rescore
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  34. 2026-06-01 13:49 UTCEPSS rescore
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  36. 2026-05-31 22:28 UTCEPSS rescore
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  38. 2026-05-31 00:13 UTCEPSS rescore
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  40. 2026-05-29 13:40 UTCEPSS rescore
  41. 2026-05-28 13:42 UTCEPSS rescore
  42. 2026-05-28 13:42 UTCEPSS rescore
  43. 2026-05-28 13:42 UTCEPSS rescore
  44. 2026-05-27 13:38 UTCEPSS rescore
  45. 2026-05-27 13:38 UTCEPSS rescore
  46. 2026-05-27 12:00 UTCEG score recompute
  47. 2026-05-27 12:00 UTCGHSA enrichment
  48. 2026-05-26 13:41 UTCEPSS rescore
  49. 2026-05-26 13:41 UTCEPSS rescore
  50. 2026-05-26 07:16 UTCEPSS rescore
  51. 2026-05-26 07:16 UTCEPSS rescore
  52. 2026-05-24 16:43 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2009-4011?
CVE-2009-4011 is a high vulnerability published on November 9, 2019. dtc-xen 0.5.x before 0.5.4 suffers from a race condition where an attacker could potentially get a bash access as xenXX user on the dom0, and then access a potentially reuse an already opened VPS console.
When was CVE-2009-4011 disclosed?
CVE-2009-4011 was first published in the National Vulnerability Database on November 9, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2009-4011 actively exploited?
CVE-2009-4011 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 57.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2009-4011?
CVE-2009-4011 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2009-4011?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-4011, 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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