CVE-2026-66786: Submariner: ipsec.conf stanza injection via remote-supplied cablename and subnets
Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16
Vendor fix available · Affected: Red Hat Advanced Cluster Management for Kubernetes 2.16 · Exploitation: possible (1 to 10%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 72% of scored CVEs
DescriptionCVE.org
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.
Affected products16
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2Versions not stated
- Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2Versions not stated
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Possible (1 to 10%). EPSS between 1% and 10%.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Red Hat
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-66786 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.