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CVE Record

CVE-2026-66792: Multicloud-operators-subscription: multicloud-operators-subscription: isclusteradmin() trusts user-settable annotations on managed clusters

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.

CriticalCVSS 9.9Not KEV-listedUpdated
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Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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cwe · medium confidence lookup

CWE-863: Authorization and privilege behavior lookup

Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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description · low confidence lookup

Container behavior lookup

The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2026-66792 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.9 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
5Timeline events
1ADP providers
11Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: total

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
9.9CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H3.16redhat

Vulnerability scoring details

Base CVSS 3.1 score

9.9Critical
CVSS 3.1 vector shape for CVE-2026-66792Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timelineredhat

    Reported to Red Hat.

  2. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  3. Source timelineredhat

    Made public.

  4. CVE publishedCVE Program

    The CVE record was published.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Red HatMulticluster Global Hub 1.4.9multicluster-globalhub/multicluster-globalhub-agent-rhel9, 1788355439affected
Red HatMulticluster Global Hub 1.4.9multicluster-globalhub/multicluster-globalhub-manager-rhel9, 1788355599affected
Red HatMulticluster Global Hub 1.4.9multicluster-globalhub/multicluster-globalhub-rhel9-operator, 1788355417affected
Red HatMulticluster Global Hub 1.5.8multicluster-globalhub/multicluster-globalhub-agent-rhel9, 1789515408affected
Red HatMulticluster Global Hub 1.5.8multicluster-globalhub/multicluster-globalhub-manager-rhel9, 1789515288affected
Red HatMulticluster Global Hub 1.5.8multicluster-globalhub/multicluster-globalhub-rhel9-operator, 1789478830affected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.11rhacm2/multicluster-operators-application-rhel9, 1787262214affected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.11rhacm2/multicluster-operators-subscription-rhel9, 1787263584affected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.13rhacm2/multicluster-operators-application-rhel9, 1787259284affected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.13rhacm2/multicluster-operators-subscription-rhel9, 1787263693affected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.14rhacm2/multicluster-operators-application-rhel9, 1786976940affected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.14rhacm2/multicluster-operators-subscription-rhel9, 1787170830affected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.15rhacm2/multicluster-operators-application-rhel9, 1787238598affected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.15rhacm2/multicluster-operators-subscription-rhel9, 1787240030affected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.16rhacm2/multicluster-operators-application-rhel9, 1787242135affected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.16rhacm2/multicluster-operators-subscription-rhel9, 1787242321affected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.17rhacm2/multicluster-operators-application-rhel9, 1787242131affected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.17rhacm2/multicluster-operators-subscription-rhel9, 1787242108affected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2rhacm2/acm-governance-policy-framework-addon-rhel9unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2rhacm2/cert-policy-controller-rhel9unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2rhacm2/config-policy-controller-rhel9unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2rhacm2/governance-policy-propagator-rhel9unaffected
Red HatRed Hat Advanced Cluster Management for Kubernetes 2rhacm2/search-collector-rhel9unaffected
Red HatRed Hat OpenShift Container Platform 4openshift4/cnf-tests-rhel8affected
Red HatRed Hat OpenShift Container Platform 4openshift4/lifecycle-agent-operator-bundleunaffected
Red HatRed Hat OpenShift Container Platform 4openshift4/lifecycle-agent-rhel9-operatorunaffected
Red HatRed Hat OpenShift Container Platform 4openshift4/topology-aware-lifecycle-manager-aztp-rhel9unaffected
Red HatRed Hat OpenShift Container Platform 4openshift4/topology-aware-lifecycle-manager-recovery-rhel8unaffected
Red HatRed Hat OpenShift Container Platform 4openshift4/topology-aware-lifecycle-manager-recovery-rhel9unaffected
Red HatRed Hat OpenShift Container Platform 4openshift4/topology-aware-lifecycle-manager-rhel8-operatorunaffected
Weakness

CWE details

CWE-863

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-863 · source CWE mapping

Incorrect Authorization

Incorrect Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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