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) @ xenial2026-09-25ubuntu
redhatopen-vm-tools-0:12.1.5-2.el8_82023-06-29redhat
redhatopen-vm-tools-0:11.3.5-1.el9_0.22023-06-29redhat
redhatopen-vm-tools-0:11.3.5-1.el8_6.22023-06-29redhat
redhatopen-vm-tools-0:11.0.5-3.el7_9.62023-06-29redhat
redhatopen-vm-tools-0:11.2.0-2.el8_4.22023-06-29redhat
redhatopen-vm-tools-0:12.1.5-1.el9_2.12023-06-29redhat
redhatopen-vm-tools-0:11.0.0-4.el8_2.22023-06-29redhat

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.

Affected Packages

(5 across 5 ecosystems)
Debian:10(1)
PackageVulnerable rangeFixed inDependents
open-vm-tools2:10.3.10-1, 2:10.3.10-1+deb10u1, 2:10.3.10-1+deb10u2, 2:10.3.10-1+deb10u2~bpo9+1, 2:10.3.10-1+deb10u32:10.3.10-1+deb10u4—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
open-vm-tools2:11.2.5-2, 2:11.2.5-2+deb11u12:11.2.5-2+deb11u2—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
open-vm-tools2:12.2.0-1, 2:12.2.0-1+deb12u1~bpo11+12:12.2.0-1+deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
open-vm-tools—2:12.2.5-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
open-vm-tools—2:12.2.5-1—

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 96× in last 7d / 411× 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 1,571 total refreshes for this CVE.

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

Related CVEs(same product + 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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-20867

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