CVE-2023-20867

CRITICALNVD 3.99.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2023-06-23), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 3.9 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 14%CVSS: 3.9Exploit: cisa kev · ssvc active · epss top5pctExposed: 0

A fix is available — apply it.

A fully compromised ESXi host can force VMware Tools to fail to authenticate host-to-guest operations, impacting the confidentiality and integrity of the guest virtual machine.

CVSS v3
3.9
EG Score
9.0(high)
EG Risk
81(Attend)
EG Risk 81/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
14%
EPSS %ILE
96%
KEV
⚠ Exploited

Published

June 13, 2023

Last Modified

October 28, 2025

References (19)

Patch Availability(8)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuopen-vm-tools-dev (2:10.2.0-3~ubuntu0.16.04.1+esm2) @ xenial2026-07-29ubuntu
redhatopen-vm-tools-0:11.0.0-4.el8_2.22023-06-29redhat
redhatopen-vm-tools-0:11.3.5-1.el8_6.22023-06-29redhat
redhatopen-vm-tools-0:12.1.5-1.el9_2.12023-06-29redhat
redhatopen-vm-tools-0:11.3.5-1.el9_0.22023-06-29redhat
redhatopen-vm-tools-0:11.0.5-3.el7_9.62023-06-29redhat
redhatopen-vm-tools-0:12.1.5-2.el8_82023-06-29redhat
redhatopen-vm-tools-0:11.2.0-2.el8_4.22023-06-29redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

All Vendor Advisories

(8)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 70× in last 7d / 376× 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.

Showing the most recent 100 of 803 total refreshes for this CVE.

  1. 2026-07-30 16:26 UTCEPSS rescore
  2. 2026-07-30 15:54 UTCVendor advisory
  3. 2026-07-30 15:53 UTCGHSA enrichment
  4. 2026-07-30 11:41 UTCEG score recompute
  5. 2026-07-30 11:41 UTCVendor advisory
  6. 2026-07-30 11:40 UTCGHSA enrichment
  7. 2026-07-30 07:25 UTCVendor advisory
  8. 2026-07-30 07:24 UTCGHSA enrichment
  9. 2026-07-30 03:11 UTCVendor advisory
  10. 2026-07-30 03:11 UTCGHSA enrichment
  11. 2026-07-29 22:58 UTCVendor advisory
  12. 2026-07-29 22:58 UTCGHSA enrichment
  13. 2026-07-29 19:27 UTCCISA KEV update
  14. 2026-07-29 18:43 UTCVendor advisory
  15. 2026-07-29 18:43 UTCGHSA enrichment
  16. 2026-07-29 14:27 UTCVendor advisory
  17. 2026-07-29 14:27 UTCGHSA enrichment
  18. 2026-07-29 10:14 UTCVendor advisory
  19. 2026-07-29 10:14 UTCGHSA enrichment
  20. 2026-07-29 06:01 UTCVendor advisory
  21. 2026-07-29 06:00 UTCGHSA enrichment
  22. 2026-07-29 01:46 UTCVendor advisory
  23. 2026-07-29 01:46 UTCGHSA enrichment
  24. 2026-07-28 21:32 UTCVendor advisory
  25. 2026-07-28 21:32 UTCGHSA enrichment
Show 75 more
  1. 2026-07-28 17:19 UTCEG score recompute
  2. 2026-07-28 17:19 UTCVendor advisory
  3. 2026-07-28 17:19 UTCGHSA enrichment
  4. 2026-07-28 15:34 UTCEPSS rescore
  5. 2026-07-28 13:06 UTCVendor advisory
  6. 2026-07-28 13:05 UTCGHSA enrichment
  7. 2026-07-28 08:53 UTCVendor advisory
  8. 2026-07-28 08:53 UTCGHSA enrichment
  9. 2026-07-28 04:39 UTCVendor advisory
  10. 2026-07-28 04:39 UTCGHSA enrichment
  11. 2026-07-28 00:26 UTCVendor advisory
  12. 2026-07-28 00:26 UTCGHSA enrichment
  13. 2026-07-27 20:13 UTCVendor advisory
  14. 2026-07-27 20:12 UTCGHSA enrichment
  15. 2026-07-27 19:24 UTCCISA KEV update
  16. 2026-07-27 17:17 UTCCISA KEV update
  17. 2026-07-27 16:00 UTCEG score recompute
  18. 2026-07-27 16:00 UTCVendor advisory
  19. 2026-07-27 16:00 UTCGHSA enrichment
  20. 2026-07-27 11:47 UTCVendor advisory
  21. 2026-07-27 11:47 UTCGHSA enrichment
  22. 2026-07-27 07:34 UTCVendor advisory
  23. 2026-07-27 07:34 UTCGHSA enrichment
  24. 2026-07-27 03:20 UTCVendor advisory
  25. 2026-07-27 03:20 UTCGHSA enrichment
  26. 2026-07-26 23:04 UTCVendor advisory
  27. 2026-07-26 23:04 UTCGHSA enrichment
  28. 2026-07-26 18:51 UTCEG score recompute
  29. 2026-07-26 18:51 UTCVendor advisory
  30. 2026-07-26 18:51 UTCGHSA enrichment
  31. 2026-07-26 14:52 UTCEPSS rescore
  32. 2026-07-26 14:52 UTCEPSS rescore
  33. 2026-07-26 14:36 UTCEG score recompute
  34. 2026-07-26 14:36 UTCVendor advisory
  35. 2026-07-26 14:36 UTCGHSA enrichment
  36. 2026-07-26 10:23 UTCVendor advisory
  37. 2026-07-26 10:23 UTCGHSA enrichment
  38. 2026-07-26 06:09 UTCVendor advisory
  39. 2026-07-26 06:09 UTCGHSA enrichment
  40. 2026-07-26 01:56 UTCEG score recompute
  41. 2026-07-26 01:56 UTCVendor advisory
  42. 2026-07-26 01:56 UTCGHSA enrichment
  43. 2026-07-25 14:16 UTCEPSS rescore
  44. 2026-07-25 14:16 UTCEPSS rescore
  45. 2026-07-24 14:15 UTCEPSS rescore
  46. 2026-07-23 14:16 UTCEPSS rescore
  47. 2026-07-23 14:16 UTCEPSS rescore
  48. 2026-07-23 02:18 UTCEG score recompute
  49. 2026-07-22 23:05 UTCEG score recompute
  50. 2026-07-22 20:55 UTCVendor advisory
  51. 2026-07-22 20:55 UTCGHSA enrichment
  52. 2026-07-22 19:40 UTCCISA KEV update
  53. 2026-07-22 16:40 UTCEG score recompute
  54. 2026-07-22 16:40 UTCVendor advisory
  55. 2026-07-22 16:40 UTCGHSA enrichment
  56. 2026-07-22 14:06 UTCEPSS rescore
  57. 2026-07-22 12:25 UTCVendor advisory
  58. 2026-07-22 12:25 UTCGHSA enrichment
  59. 2026-07-22 08:12 UTCVendor advisory
  60. 2026-07-22 08:12 UTCGHSA enrichment
  61. 2026-07-22 03:59 UTCVendor advisory
  62. 2026-07-22 03:59 UTCGHSA enrichment
  63. 2026-07-21 23:44 UTCVendor advisory
  64. 2026-07-21 23:43 UTCGHSA enrichment
  65. 2026-07-21 18:14 UTCEG score recompute
  66. 2026-07-21 18:14 UTCVendor advisory
  67. 2026-07-21 18:14 UTCGHSA enrichment
  68. 2026-07-21 15:23 UTCEPSS rescore
  69. 2026-07-21 14:37 UTCCISA KEV update
  70. 2026-07-21 14:01 UTCVendor advisory
  71. 2026-07-21 14:01 UTCGHSA enrichment
  72. 2026-07-21 09:45 UTCVendor advisory
  73. 2026-07-21 09:45 UTCGHSA enrichment
  74. 2026-07-21 05:32 UTCVendor advisory
  75. 2026-07-21 05:31 UTCGHSA enrichment

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2023-20867?
CVE-2023-20867 is a critical vulnerability published on June 13, 2023. A fully compromised ESXi host can force VMware Tools to fail to authenticate host-to-guest operations, impacting the confidentiality and integrity of the guest virtual machine.
When was CVE-2023-20867 disclosed?
CVE-2023-20867 was first published in the National Vulnerability Database on June 13, 2023, with the most recent update on October 28, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-20867 actively exploited?
Yes. CISA added CVE-2023-20867 to the Known Exploited Vulnerabilities catalog on June 23, 2023, affecting VMware Tools. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2023-20867?
CVE-2023-20867 has a CVSS v3 base score of 3.9 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2023-20867?
CVE-2023-20867 affects VMware Tools. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2023-20867?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-20867, 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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