CVE-2026-66792

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-17. the CNA's CVSS baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:redhat, epss, ghsa
Trending — 4 sources updated this week
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.9Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a user on a managed cluster to escalate their privileges by creating a Subscription with specific, crafted annotations. Successful exploitation grants the attacker the ability to deploy resources into any namespace with the elevated permissions of the controller's Service Account, potentially leading to unauthorized access and control over cluster resources.

CVSS v3
9.9
EG Score
9.9(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity99% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

August 17, 2026

Last Modified

September 5, 2026

Advisory Details (8)

Auto-updated Sep 12, 2026
Patch available. Sources: redhat.
redhat

2507537 – (CVE-2026-66792) CVE-2026-66792 multicloud-operators-subscription: multicloud-operators-subscription: IsClusterAdmin() trusts user-settable annotations on managed clusters

https://bugzilla.redhat.com/show_bug.cgi?id=2507537
redhat Patch Available

CVE-2026-66792 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-66792
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:60391
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:60390
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:60389
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:60388
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:60387
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:60386

Vendor Advisories for CVE-2026-66792(7)

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

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhacm2/multicluster-operators-subscription-rhel9:17872635842026-08-26redhat
redhatrhacm2/multicluster-operators-subscription-rhel9:17871708302026-08-26redhat
redhatrhacm2/multicluster-operators-subscription-rhel9:17872636932026-08-26redhat
redhatrhacm2/multicluster-operators-subscription-rhel9:17872400302026-08-26redhat
redhatrhacm2/multicluster-operators-subscription-rhel9:17872423212026-08-26redhat
redhatrhacm2/multicluster-operators-subscription-rhel9:17872421082026-08-26redhat

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.

Data Freshness Timeline

(refreshed 89× in last 7d / 364× 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 394 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-66792?
CVE-2026-66792 is a critical vulnerability published on August 17, 2026. A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a user on a managed cluster to escalate their privileges by creating a Subscription with specific, crafted annotations. Successful exploitation grants the attacker the ability to deploy resources into any…
When was CVE-2026-66792 disclosed?
CVE-2026-66792 was first published in the National Vulnerability Database on August 17, 2026, with the most recent update on September 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-66792 actively exploited?
CVE-2026-66792 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 62.7% of all scored CVEs.
What is the CVSS score of CVE-2026-66792?
CVE-2026-66792 has a CVSS v4.0 base score of 9.9 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-66792?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-66792, 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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