{
  "threat_severity" : "Important",
  "public_date" : "2026-08-17T17:25:00Z",
  "bugzilla" : {
    "description" : "multicloud-operators-subscription: multicloud-operators-subscription: IsClusterAdmin() trusts user-settable annotations on managed clusters",
    "id" : "2507537",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2507537"
  },
  "cvss3" : {
    "cvss3_base_score" : "9.9",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
    "status" : "draft"
  },
  "cwe" : "CWE-863",
  "details" : [ "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.", "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." ],
  "statement" : "Critical: This flaw in Red Hat Advanced Cluster Management for Kubernetes allows a privileged user on a managed cluster to escalate privileges to cluster-admin. By crafting a Subscription with specific user-settable annotations, an attacker can bypass intended security controls and deploy resources across multiple namespaces with elevated permissions, leading to full compromise of the managed cluster.",
  "package_state" : [ {
    "product_name" : "Multicluster Global Hub",
    "fix_state" : "Will not fix",
    "package_name" : "multicluster-globalhub/multicluster-globalhub-agent-rhel9",
    "cpe" : "cpe:/a:redhat:multicluster_globalhub"
  }, {
    "product_name" : "Multicluster Global Hub",
    "fix_state" : "Will not fix",
    "package_name" : "multicluster-globalhub/multicluster-globalhub-manager-rhel9",
    "cpe" : "cpe:/a:redhat:multicluster_globalhub"
  }, {
    "product_name" : "Multicluster Global Hub",
    "fix_state" : "Affected",
    "package_name" : "multicluster-globalhub/multicluster-globalhub-rhel9-operator",
    "cpe" : "cpe:/a:redhat:multicluster_globalhub"
  }, {
    "product_name" : "Red Hat Advanced Cluster Management for Kubernetes 2",
    "fix_state" : "Not affected",
    "package_name" : "rhacm2/acm-governance-policy-framework-addon-rhel9",
    "cpe" : "cpe:/a:redhat:acm:2"
  }, {
    "product_name" : "Red Hat Advanced Cluster Management for Kubernetes 2",
    "fix_state" : "Not affected",
    "package_name" : "rhacm2/cert-policy-controller-rhel9",
    "cpe" : "cpe:/a:redhat:acm:2"
  }, {
    "product_name" : "Red Hat Advanced Cluster Management for Kubernetes 2",
    "fix_state" : "Not affected",
    "package_name" : "rhacm2/config-policy-controller-rhel9",
    "cpe" : "cpe:/a:redhat:acm:2"
  }, {
    "product_name" : "Red Hat Advanced Cluster Management for Kubernetes 2",
    "fix_state" : "Not affected",
    "package_name" : "rhacm2/governance-policy-propagator-rhel9",
    "cpe" : "cpe:/a:redhat:acm:2"
  }, {
    "product_name" : "Red Hat Advanced Cluster Management for Kubernetes 2",
    "fix_state" : "Affected",
    "package_name" : "rhacm2/multicluster-operators-application-rhel9",
    "cpe" : "cpe:/a:redhat:acm:2"
  }, {
    "product_name" : "Red Hat Advanced Cluster Management for Kubernetes 2",
    "fix_state" : "Affected",
    "package_name" : "rhacm2/multicluster-operators-subscription-rhel9",
    "cpe" : "cpe:/a:redhat:acm:2"
  }, {
    "product_name" : "Red Hat Advanced Cluster Management for Kubernetes 2",
    "fix_state" : "Affected",
    "package_name" : "rhacm2/search-collector-rhel9",
    "cpe" : "cpe:/a:redhat:acm:2"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Affected",
    "package_name" : "openshift4/cnf-tests-rhel8",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Not affected",
    "package_name" : "openshift4/lifecycle-agent-operator-bundle",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Not affected",
    "package_name" : "openshift4/lifecycle-agent-rhel9-operator",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Not affected",
    "package_name" : "openshift4/topology-aware-lifecycle-manager-aztp-rhel9",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Not affected",
    "package_name" : "openshift4/topology-aware-lifecycle-manager-recovery-rhel8",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Not affected",
    "package_name" : "openshift4/topology-aware-lifecycle-manager-recovery-rhel9",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Affected",
    "package_name" : "openshift4/topology-aware-lifecycle-manager-rhel8-operator",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Not affected",
    "package_name" : "openshift4/topology-aware-lifecycle-manager-rhel9-operator",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat OpenShift Container Platform 4",
    "fix_state" : "Affected",
    "package_name" : "openshift4/ztp-site-generate-rhel8",
    "cpe" : "cpe:/a:redhat:openshift:4"
  }, {
    "product_name" : "Red Hat Openshift Data Foundation 4",
    "fix_state" : "Not affected",
    "package_name" : "odf4/odf-cli-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_data_foundation:4",
    "impact" : "low"
  }, {
    "product_name" : "Red Hat Openshift Data Foundation 4",
    "fix_state" : "Not affected",
    "package_name" : "odf4/odf-multicluster-rhel9-operator",
    "cpe" : "cpe:/a:redhat:openshift_data_foundation:4",
    "impact" : "low"
  }, {
    "product_name" : "Red Hat Openshift Data Foundation 4",
    "fix_state" : "Not affected",
    "package_name" : "odf4/odr-rhel9-operator",
    "cpe" : "cpe:/a:redhat:openshift_data_foundation:4",
    "impact" : "low"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-66792\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-66792" ],
  "name" : "CVE-2026-66792",
  "mitigation" : {
    "value" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
    "lang" : "en:us"
  },
  "csaw" : false
}