What’s Vulnerable › Vulnerabilities

CVE-2024-9486: VM images built with Image Builder and Proxmox provider use default credentials

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-10-15 · updated 2026-06-17
• Weakness: CWE-798

Description

A security issue was discovered in the Kubernetes Image Builder versions <= v0.1.37 where default credentials are enabled during the image build process. Virtual machine images built using the Proxmox provider do not disable these default credentials, and nodes using the resulting images may be accessible via these default credentials. The credentials can be used to gain root access. Kubernetes clusters are only affected if their nodes use VM images created via the Image Builder project with its Proxmox provider.

Affected products

• Kubernetes Image Builder: before 0.1.38 — fixed in 0.1.38

How to fix

Upgrade to a fixed version: Kubernetes Image Builder 0.1.38. Check the vendor advisory for mitigations.

References

• https://github.com/kubernetes-sigs/image-builder/pull/1595
• https://github.com/kubernetes/kubernetes/issues/128006
• https://groups.google.com/g/kubernetes-security-announce/c/UKJG-oZogfA/m/Lu1hcnHmAQAJ

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