CVE-2026-66792

CRITICALPre-NVD 9.99.9—
EchelonGraph scoreHIGH confidence

Score 9.9 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-17. a secondary CVSS source baseline 9.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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

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

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(high)
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
23%
KEV
Not listed

Published

August 17, 2026

Last Modified

August 19, 2026

Advisory Details (2)

Auto-updated Aug 19, 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

Vendor Advisories for CVE-2026-66792(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 31× in last 7d / 31× 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. 2026-08-20 11:41 UTCGHSA enrichment
  2. 2026-08-20 07:48 UTCGHSA enrichment
  3. 2026-08-20 03:56 UTCGHSA enrichment
  4. 2026-08-20 00:03 UTCGHSA enrichment
  5. 2026-08-19 20:11 UTCEG score recompute
  6. 2026-08-19 20:11 UTCGHSA enrichment
  7. 2026-08-19 17:04 UTCEPSS rescore
  8. 2026-08-19 16:18 UTCGHSA enrichment
  9. 2026-08-19 12:25 UTCGHSA enrichment
  10. 2026-08-19 11:22 UTCEG score recompute
  11. 2026-08-19 11:22 UTCGHSA enrichment
  12. 2026-08-19 10:53 UTCEG score recompute
  13. 2026-08-19 10:53 UTCGHSA enrichment
  14. 2026-08-19 10:46 UTCGHSA enrichment
  15. 2026-08-19 06:54 UTCGHSA enrichment
  16. 2026-08-19 03:01 UTCGHSA enrichment
  17. 2026-08-18 23:09 UTCGHSA enrichment
  18. 2026-08-18 19:17 UTCGHSA enrichment
  19. 2026-08-18 15:25 UTCEG score recompute
  20. 2026-08-18 15:24 UTCGHSA enrichment
  21. 2026-08-18 14:54 UTCEG score recompute
  22. 2026-08-18 14:54 UTCGHSA enrichment
  23. 2026-08-18 13:48 UTCEPSS rescore
  24. 2026-08-18 11:00 UTCGHSA enrichment
  25. 2026-08-18 07:07 UTCGHSA enrichment
Show 6 more
  1. 2026-08-18 03:13 UTCGHSA enrichment
  2. 2026-08-17 23:20 UTCEG score recompute
  3. 2026-08-17 23:20 UTCGHSA enrichment
  4. 2026-08-17 19:27 UTCEG score recompute
  5. 2026-08-17 18:21 UTCEG score recompute
  6. 2026-08-17 18:19 UTCMITRE cvelistV5first tracked

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 August 19, 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 77.0% of all scored CVEs.
What is the CVSS score of CVE-2026-66792?
CVE-2026-66792 has a CVSS v3 base score of 9.9 (NVD).
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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