CVE-2026-67567
A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a tenant, who has the ability to create HelmRelease custom resources (CRs), to bypass existing security controls. The system's HelmRelease controller processes Helm chart templates using its own elevated ServiceAccount privileges without proper validation. This enables the tenant to deploy arbitrary resources across the entire cluster, leading to a significant security compromise.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Puntuación base: 9.9
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.62%
- Percentil entre todas las CVEs puntuadas: 48
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1210Exploitation of Remote Serviceslateral movement85 % - Impacto principal
T1068Exploitation for Privilege Escalationprivilege escalation90 % - Impacto secundario
T1059Command and Scripting Interpreterexecution80 %
Vulnerabilidad en componente de servicios remotos (multicloud-operators) que requiere privilegios (PR:L) para crear HelmRelease CRs. El controlador procesa plantillas con ServiceAccount elevado, permitiendo escalada a privilegios de administrador del cluster y ejecución de comandos arbitrarios media
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-441
Referencias
- https://access.redhat.com/errata/RHSA-2026:60386
- https://access.redhat.com/errata/RHSA-2026:60387
- https://access.redhat.com/errata/RHSA-2026:60388
- https://access.redhat.com/errata/RHSA-2026:60389
- https://access.redhat.com/errata/RHSA-2026:60390
- https://access.redhat.com/errata/RHSA-2026:60391
- https://access.redhat.com/security/cve/CVE-2026-67567
- https://bugzilla.redhat.com/show_bug.cgi?id=2514224
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-67567",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-67567",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-08-21T16:20:26.843480Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 9.9,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 6,
"exploitabilityScore": 3.1
}
]
},
"affected": [
{
"source": "secalert@redhat.com",
"affectedData": [
{
"cpes": [
"cpe:/a:redhat:acm:2.11::el9"
],
"vendor": "Red Hat",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.11",
"versions": [
{
"status": "unaffected",
"version": "1787263584",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhacm2/multicluster-operators-subscription-rhel9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:acm:2.13::el9"
],
"vendor": "Red Hat",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.13",
"versions": [
{
"status": "unaffected",
"version": "1787263693",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhacm2/multicluster-operators-subscription-rhel9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:acm:2.14::el9"
],
"vendor": "Red Hat",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.14",
"versions": [
{
"status": "unaffected",
"version": "1787170830",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhacm2/multicluster-operators-subscription-rhel9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:acm:2.15::el9"
],
"vendor": "Red Hat",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.15",
"versions": [
{
"status": "unaffected",
"version": "1787240030",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhacm2/multicluster-operators-subscription-rhel9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:acm:2.16::el9"
],
"vendor": "Red Hat",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.16",
"versions": [
{
"status": "unaffected",
"version": "1787242321",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhacm2/multicluster-operators-subscription-rhel9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
},
{
"cpes": [
"cpe:/a:redhat:acm:2.17::el9"
],
"vendor": "Red Hat",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2.17",
"versions": [
{
"status": "unaffected",
"version": "1787242108",
"lessThan": "*",
"versionType": "rpm"
}
],
"packageName": "rhacm2/multicluster-operators-subscription-rhel9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"defaultStatus": "affected"
}
]
}
],
"published": "2026-08-20T21:17:07.403",
"references": [
{
"url": "https://access.redhat.com/errata/RHSA-2026:60386",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:60387",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:60388",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:60389",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:60390",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:60391",
"source": "secalert@redhat.com"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2026-67567",
"source": "secalert@redhat.com"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2514224",
"source": "secalert@redhat.com"
}
],
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"type": "Secondary",
"source": "secalert@redhat.com",
"description": [
{
"lang": "en",
"value": "CWE-441"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a tenant, who has the ability to create HelmRelease custom resources (CRs), to bypass existing security controls. The system's HelmRelease controller processes Helm chart templates using its own elevated ServiceAccount privileges without proper validation. This enables the tenant to deploy arbitrary resources across the entire cluster, leading to a significant security compromise."
}
],
"lastModified": "2026-08-28T21:17:10.720",
"sourceIdentifier": "secalert@redhat.com"
}