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CVE-2026-75924— Managed-serviceaccount: managed-serviceaccount: hub addon-manager clusterrole grants cluster-wide secret read/write and csr approval

Quick assessment

Affected
Red Hat Multicluster Engine for Kubernetes
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Red Hat Multicluster Engine for Kubernetes是美国Red Hat公司的一个管理Kubernetes多集群的引擎软件。 Red Hat Multicluster Engine for Kubernetes存在权限许可和访问控制问题漏洞，该漏洞源于managed-serviceaccount中ClusterRole授予过多权限，可能导致受感染的addon-manager pod读取所有命名空间中的任何secret，并批准任意证书签名请求，从而导致信息泄露和权限提升。

CVSS 8.7 · High EPSS 0.16% · P6

Affected Version Matrix 3

VendorProduct Version RangeStatus
Red Hat Multicluster Engine for Kubernetes any affected
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2 any unaffected
any unaffected
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I. Basic Information for CVE-2026-75924

Vulnerability Information
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Vulnerability Title
Managed-serviceaccount: managed-serviceaccount: hub addon-manager clusterrole grants cluster-wide secret read/write and csr approval
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in managed-serviceaccount. A compromised addon-manager pod, due to its ClusterRole granting excessive permissions, can read any secret across all namespaces. Additionally, it can approve arbitrary Certificate Signing Requests (CSRs), which could lead to information disclosure and privilege escalation within the cluster.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat Multicluster Engine for Kubernetes 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Multicluster Engine for Kubernetes是美国Red Hat公司的一个管理Kubernetes多集群的引擎软件。 Red Hat Multicluster Engine for Kubernetes存在权限许可和访问控制问题漏洞，该漏洞源于managed-serviceaccount中ClusterRole授予过多权限，可能导致受感染的addon-manager pod读取所有命名空间中的任何secret，并批准任意证书签名请求，从而导致信息泄露和权限提升。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Multicluster Engine for Kubernetes - cpe:/a:redhat:multicluster_engine
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2 - cpe:/a:redhat:acm:2
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2 - cpe:/a:redhat:acm:2

II. Public POCs for CVE-2026-75924

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III. Intelligence Information for CVE-2026-75924

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Vendor Advisories for CVE-2026-75924 (2)

Same Patch Batch · Red Hat · 2026-08-18 · 14 CVEs total

CVE-2026-66780 9.9 CRITICAL Submariner-operator: submariner-operator: flat broker trust model grants every spoke full
CVE-2026-12564 9.6 CRITICAL Automation-controller: automation-controller: kubernetes service account token exfiltratio
CVE-2026-18963 9.1 CRITICAL Keycloak-services: keycloak-services: unauthenticated account takeover via reset-credentia
CVE-2026-66793 8.8 HIGH Governance-policy-addon-controller: governance-policy-addon-controller: arbitrary containe
CVE-2026-66783 8.2 HIGH Submariner-operator: submariner-operator: arbitrary image override enables privileged code
CVE-2026-66782 7.8 HIGH Submariner-operator: submariner-operator: broker api bearer token stored cleartext in cr s
CVE-2026-71365 7.7 HIGH Awx: webhook status callback ssrf leaks the git pat
CVE-2026-15571 7.3 HIGH Keycloak-services: keycloak-services: predictable account-linking hash enables account tak
CVE-2026-66781 6.5 MEDIUM Submariner-operator: submariner-operator: ipsec psk stored cleartext in submariner cr spec
CVE-2026-75032 6.3 MEDIUM Bluez: bluez: out-of-bounds read in avrcp parse_media_element and parse_media_folder
CVE-2026-75485 5.5 MEDIUM Must-gather: must-gather: cluster proxy object dumped raw, bypassing inspect redaction of
CVE-2026-73834 5.5 MEDIUM Must-gather: must-gather: embedded secret data in acm wrapper crs collected without redact
CVE-2026-19608 5.3 MEDIUM Keycloak-services: keycloak-services: name-only group claims let same-name groups satisfy

IV. Related Vulnerabilities

Same product: Multicluster Engine for Kubernetes
Same vendor: Red Hat
Same weakness: CWE-269

V. Comments for CVE-2026-75924

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