CVE-2026-66792

CRITICALCVSS 9.9/10EPSS 0.43%

Last modified

CVE-2026-66792 is a critical-severity vulnerability rated 9.9/10 on the CVSS scale. A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a user on a managed cluster to escalate their privileges by creating a Subscription with specific, crafted annotations. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a user on a managed cluster to escalate their privileges by creating a Subscription with specific, crafted annotations. Successful exploitation grants the attacker the ability to deploy resources into any namespace with the elevated permissions of the controller's Service Account, potentially leading to unauthorized access and control over cluster resources.

Metrics

EPSS Probability
0.43%

37.3th 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 HatMulticluster Global Hub 1.4.9All versions
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 OpenShift Container Platform 4All versions

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-66792?
A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a user on a managed cluster to escalate their privileges by creating a Subscription with specific, crafted annotations. Successful exploitation grants the attacker the ability to deploy resources into any namespace with the elevated permissions of the controller's Service Account, potentially leading to unauthorized access and control over cluster resources.
How severe is CVE-2026-66792?
CVE-2026-66792 has a CVSS score of 9.9/10 (CRITICAL severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.
How do I fix CVE-2026-66792?
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.

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Source: NVD / NIST