CVE-2026-66781

MEDIUMCVSS 5.4/10EPSS 0.24%

Last modified

CVE-2026-66781 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A flaw was found in the Submariner operator. The Submariner Custom Resource (CR), used for configuring network connectivity, stores the IPsec pre-shared key (PSK) in an unencrypted format. EPSS estimates a 0.24% chance of exploitation in the next 30 days.

Description

A flaw was found in the Submariner operator. The Submariner Custom Resource (CR), used for configuring network connectivity, stores the IPsec pre-shared key (PSK) in an unencrypted format. This key, which is critical for securing communication between Kubernetes clusters, can be accessed by unauthorized parties. Such access enables an attacker to passively decrypt network traffic flowing between any two clusters in the mesh, resulting in sensitive information disclosure.

Metrics

EPSS Probability
0.24%

14.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.11All versions
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.13All versions
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.14All versions
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.15All versions
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.16All versions
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.17All versions
Red HatRed Hat Advanced Cluster Management for Kubernetes 2All versions

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-66781?
A flaw was found in the Submariner operator. The Submariner Custom Resource (CR), used for configuring network connectivity, stores the IPsec pre-shared key (PSK) in an unencrypted format. This key, which is critical for securing communication between Kubernetes clusters, can be accessed by unauthorized parties. Such access enables an attacker to passively decrypt network traffic flowing between any two clusters in the mesh, resulting in sensitive information disclosure.
How severe is CVE-2026-66781?
CVE-2026-66781 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2026-66781?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST