A flaw was found in the `submariner-operator` component of Red Hat Advanced Cluster Management for Kubernetes. This vulnerability allows a cluster administrator, or any user with permissions to modify the Submariner Custom Resource (CR), to specify an unvalidated image path. This lack of validation enables an attacker to execute arbitrary code with elevated privileges across the entire cluster, including control-plane nodes, by deploying a malicious image.
History

Wed, 19 Aug 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 19 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Tue, 18 Aug 2026 17:15:00 +0000

Type Values Removed Values Added
Description A flaw was found in the `submariner-operator` component of Red Hat Advanced Cluster Management for Kubernetes. This vulnerability allows a cluster administrator, or any user with permissions to modify the Submariner Custom Resource (CR), to specify an unvalidated image path. This lack of validation enables an attacker to execute arbitrary code with elevated privileges across the entire cluster, including control-plane nodes, by deploying a malicious image.
Title Submariner-operator: submariner-operator: arbitrary image override enables privileged code execution on every node
First Time appeared Redhat
Redhat acm
Weaknesses CWE-20
CPEs cpe:/a:redhat:acm:2
Vendors & Products Redhat
Redhat acm
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-08-18T17:06:02.815Z

Updated: 2026-08-19T15:04:44.821Z

Reserved: 2026-07-27T17:51:24.885Z

Link: CVE-2026-66783

cve-icon Vulnrichment

Updated: 2026-08-19T15:04:39.637Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-18T17:17:00.840

Modified: 2026-08-20T13:08:53.900

Link: CVE-2026-66783

cve-icon Redhat

Severity : Important

Publid Date: 2026-08-18T16:35:00Z

Links: CVE-2026-66783 - Bugzilla