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CVE-2026-66792

Multicloud-operators-subscription: multicloud-operators-subscription: isclusteradmin() trusts user-settable annotations on managed clusters

Published: Aug 17, 2026Updated: Sep 21, 2026 Sources: CVE List NVDCWE-863
9.9CRITICAL
NVD MITRE
EPSS Score
0.5%
Top 58.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only
Self-Check
Not available

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-863

Affected Products

Red Hat
commercial·US
Multicluster Global Hub 1.4.9On-prem
Operating Systems / linux-distro
Red Hat Advanced Cluster Management for Kubernetes 2.11On-premSaaS Service
Cloud & SaaS / container-orchestration
Red Hat Advanced Cluster Management for Kubernetes 2.13On-premSaaS Service
Cloud & SaaS / container-orchestration
Red Hat Advanced Cluster Management for Kubernetes 2.14On-premSaaS Service
Cloud & SaaS / container-orchestration
Red Hat Advanced Cluster Management for Kubernetes 2.15On-prem
Operating Systems / linux-distro
Red Hat Advanced Cluster Management for Kubernetes 2.16On-prem
Operating Systems / linux-distro
Red Hat Advanced Cluster Management for Kubernetes 2.17On-prem
Operating Systems / linux-distro
Red Hat Advanced Cluster Management for Kubernetes 2On-prem
Cloud & SaaS / container-orchestration
and 2 more affected products View all →

Exploitability

Workaround Available
Is your org exposed to CVE-2026-66792?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2026:60386
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:60387
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:60388
access.redhat.com
and 6 more references View all →

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