What’s Vulnerable › Vulnerabilities

CVE-2020-8551: Kubernetes kubelet denial of service

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-03-27 · updated 2026-06-17
• Weakness: CWE-789

Description

The Kubelet component in versions 1.15.0-1.15.9, 1.16.0-1.16.6, and 1.17.0-1.17.2 has been found to be vulnerable to a denial of service attack via the kubelet API, including the unauthenticated HTTP read-only API typically served on port 10255, and the authenticated HTTPS API typically served on port 10250.

Affected products

• Fedoraproject Fedora: 32
• Kubernetes: from 1.15.0 through 1.15.9; from 1.16.0 through 1.16.6; from 1.17.0 through 1.17.2

References

• https://github.com/kubernetes/kubernetes/issues/89377
• https://groups.google.com/forum/#%21topic/kubernetes-security-announce/2UOlsba2g0s
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3SOCLOPTSYABTE4CLTSPDIFE6ZZZR4LX/
• https://security.netapp.com/advisory/ntap-20200413-0003/
• https://github.com/kubernetes/kubernetes/issues/89377
• https://groups.google.com/forum/#%21topic/kubernetes-security-announce/2UOlsba2g0s
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3SOCLOPTSYABTE4CLTSPDIFE6ZZZR4LX/
• https://security.netapp.com/advisory/ntap-20200413-0003/

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