CVE-2026-54100

HIGHPre-NVD 8.38.3—
EchelonGraph scoreMEDIUM confidence

Score 8.3 from GitHub Security Advisory (severity: HIGH) published 2026-06-22. a secondary CVSS source baseline 8.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.3Exploit: None knownExposed: 0

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

A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. WMCO establishes SSH connections to Windows worker nodes without verifying the remote server host key. An adjacent-network attacker who can intercept or redirect WMCO's SSH session can capture WICD and kubelet bootstrap credentials transferred during node configuration, enabling compromise of Windows node identities in the cluster.

CVSS v3
8.3
EG Score
8.3(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

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
Severity83% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

June 22, 2026

Last Modified

July 15, 2026

Advisory Details (2)

Auto-updated Jun 22, 2026
Patch available. Sources: redhat.
redhat

2487953 – (CVE-2026-54100) CVE-2026-54100 windows-machine-config-operator: windows-machine-config-operator: SSH host key not verified enables credential theft

https://bugzilla.redhat.com/show_bug.cgi?id=2487953
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-54100

Vendor Advisories for CVE-2026-54100(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 85× 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. 2026-07-26 16:16 UTCEG score recompute
  2. 2026-07-26 16:16 UTCGHSA enrichment
  3. 2026-07-26 14:54 UTCEPSS rescore
  4. 2026-07-25 14:18 UTCEPSS rescore
  5. 2026-07-24 14:18 UTCEPSS rescore
  6. 2026-07-23 14:18 UTCEPSS rescore
  7. 2026-07-23 03:19 UTCEG score recompute
  8. 2026-07-22 14:08 UTCEPSS rescore
  9. 2026-07-21 15:25 UTCEPSS rescore
  10. 2026-07-20 17:08 UTCEPSS rescore
  11. 2026-07-19 14:31 UTCEPSS rescore
  12. 2026-07-19 14:31 UTCEPSS rescore
  13. 2026-07-19 02:29 UTCEPSS rescore
  14. 2026-07-18 10:04 UTCEPSS rescore
  15. 2026-07-16 20:18 UTCGHSA enrichment
  16. 2026-07-16 17:03 UTCEPSS rescore
  17. 2026-07-16 07:18 UTCGHSA enrichment
  18. 2026-07-15 18:51 UTCGHSA enrichment
  19. 2026-07-15 16:57 UTCEPSS rescore
  20. 2026-07-15 16:57 UTCEPSS rescore
  21. 2026-07-15 06:21 UTCGHSA enrichment
  22. 2026-07-15 02:00 UTCEPSS rescore
  23. 2026-07-15 02:00 UTCEPSS rescore
  24. 2026-07-14 15:44 UTCGHSA enrichment
  25. 2026-07-14 03:15 UTCGHSA enrichment
Show 74 more
  1. 2026-07-13 22:31 UTCEPSS rescore
  2. 2026-07-13 14:48 UTCGHSA enrichment
  3. 2026-07-13 06:13 UTCEPSS rescore
  4. 2026-07-13 06:13 UTCEPSS rescore
  5. 2026-07-13 02:21 UTCGHSA enrichment
  6. 2026-07-12 13:54 UTCGHSA enrichment
  7. 2026-07-12 05:46 UTCEPSS rescore
  8. 2026-07-12 01:21 UTCGHSA enrichment
  9. 2026-07-11 12:54 UTCGHSA enrichment
  10. 2026-07-11 08:27 UTCEPSS rescore
  11. 2026-07-11 08:27 UTCEPSS rescore
  12. 2026-07-11 00:27 UTCGHSA enrichment
  13. 2026-07-10 11:52 UTCGHSA enrichment
  14. 2026-07-09 23:24 UTCGHSA enrichment
  15. 2026-07-09 19:10 UTCEPSS rescore
  16. 2026-07-09 19:10 UTCEPSS rescore
  17. 2026-07-09 10:57 UTCGHSA enrichment
  18. 2026-07-08 22:29 UTCGHSA enrichment
  19. 2026-07-08 15:16 UTCEPSS rescore
  20. 2026-07-08 15:16 UTCEPSS rescore
  21. 2026-07-08 10:02 UTCGHSA enrichment
  22. 2026-07-07 21:34 UTCGHSA enrichment
  23. 2026-07-07 13:46 UTCEPSS rescore
  24. 2026-07-07 13:46 UTCEPSS rescore
  25. 2026-07-07 09:07 UTCGHSA enrichment
  26. 2026-07-06 20:37 UTCGHSA enrichment
  27. 2026-07-06 16:27 UTCEPSS rescore
  28. 2026-07-06 16:27 UTCEPSS rescore
  29. 2026-07-06 08:08 UTCGHSA enrichment
  30. 2026-07-06 02:23 UTCEPSS rescore
  31. 2026-07-06 02:23 UTCEPSS rescore
  32. 2026-07-05 19:23 UTCGHSA enrichment
  33. 2026-07-05 06:57 UTCGHSA enrichment
  34. 2026-07-05 02:31 UTCEPSS rescore
  35. 2026-07-05 02:30 UTCEPSS rescore
  36. 2026-07-04 18:27 UTCGHSA enrichment
  37. 2026-07-04 06:31 UTCEPSS rescore
  38. 2026-07-04 06:31 UTCEPSS rescore
  39. 2026-07-04 06:00 UTCGHSA enrichment
  40. 2026-07-03 17:32 UTCGHSA enrichment
  41. 2026-07-03 05:04 UTCGHSA enrichment
  42. 2026-07-02 16:36 UTCGHSA enrichment
  43. 2026-07-02 04:06 UTCGHSA enrichment
  44. 2026-07-01 15:40 UTCGHSA enrichment
  45. 2026-07-01 15:07 UTCEPSS rescore
  46. 2026-07-01 03:13 UTCGHSA enrichment
  47. 2026-06-30 23:22 UTCEPSS rescore
  48. 2026-06-30 14:45 UTCGHSA enrichment
  49. 2026-06-30 02:17 UTCGHSA enrichment
  50. 2026-06-29 14:06 UTCEPSS rescore
  51. 2026-06-29 14:06 UTCEPSS rescore
  52. 2026-06-29 13:49 UTCGHSA enrichment
  53. 2026-06-29 01:22 UTCGHSA enrichment
  54. 2026-06-28 14:07 UTCEPSS rescore
  55. 2026-06-28 12:55 UTCGHSA enrichment
  56. 2026-06-28 04:56 UTCEPSS rescore
  57. 2026-06-28 04:56 UTCEPSS rescore
  58. 2026-06-28 00:29 UTCGHSA enrichment
  59. 2026-06-27 12:02 UTCGHSA enrichment
  60. 2026-06-27 03:08 UTCEPSS rescore
  61. 2026-06-26 23:35 UTCGHSA enrichment
  62. 2026-06-26 11:08 UTCGHSA enrichment
  63. 2026-06-25 18:42 UTCGHSA enrichment
  64. 2026-06-25 13:49 UTCEPSS rescore
  65. 2026-06-25 06:15 UTCGHSA enrichment
  66. 2026-06-24 17:48 UTCGHSA enrichment
  67. 2026-06-24 14:05 UTCEPSS rescore
  68. 2026-06-24 05:06 UTCGHSA enrichment
  69. 2026-06-23 21:33 UTCEPSS rescore
  70. 2026-06-23 21:33 UTCEPSS rescore
  71. 2026-06-23 16:36 UTCGHSA enrichment
  72. 2026-06-23 04:04 UTCGHSA enrichment
  73. 2026-06-22 15:37 UTCEG score recompute
  74. 2026-06-22 15:37 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-54100?
CVE-2026-54100 is a high vulnerability published on June 22, 2026. A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. WMCO establishes SSH connections to Windows worker nodes without verifying the remote server host key. An adjacent-network attacker who can intercept or redirect WMCO's SSH session can capture…
When was CVE-2026-54100 disclosed?
CVE-2026-54100 was first published in the National Vulnerability Database on June 22, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54100 actively exploited?
CVE-2026-54100 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 79.6% of all scored CVEs.
What is the CVSS score of CVE-2026-54100?
CVE-2026-54100 has a CVSS v3 base score of 8.3 (NVD).
How do I remediate CVE-2026-54100?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54100, 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

Explore the affected products and dependency analysis for CVE-2026-54100

Explore →

Is Your Infrastructure Affected by CVE-2026-54100?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs