CVE-2026-66786

Submariner: submariner: ipsec.conf stanza injection via remote-supplied cablename and subnets

Published: Sep 2, 2026Updated: Sep 5, 2026 Sources: CVE List NVDCWE-94

9.1CRITICAL

Description

A flaw was found in submariner. In cert-auth mode, the connection configuration is built using free-form strings from the Custom Resource Definition (CRD) without proper validation. A malicious cluster can exploit this by publishing a CableName that includes newlines and ipsec.conf directives. This allows an attacker to inject arbitrary configuration parameters or execute commands through leftupdown hooks, leading to remote code execution as root on the gateway node.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:HPrivileges Required

High

UI:NUser Interaction

None

Scope

S:CScope

Changed

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-94

Affected Products

Red Hat

commercial·US

Red Hat Advanced Cluster Management for Kubernetes 2.17On-prem

Operating Systems / linux-distro

Red Hat Advanced Cluster Management for Kubernetes 2On-prem

Cloud & SaaS / container-orchestration

Exploitability

Workaround Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Execution

Initial Access

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References

https://access.redhat.com/errata/RHSA-2026:63016

access.redhat.com

https://access.redhat.com/security/cve/CVE-2026-66786

access.redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2507531

bugzilla.redhat.com

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