CVE-2020-8554

Name: CVE-2020-8554
Creator: NVD / NIST
Published: 2021-01-21T17:15:13.843+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5/10EPSS 9.27%

Last modified Jun 17, 2026

CVE-2020-8554 is a medium-severity vulnerability rated 5/10 on the CVSS scale. Kubernetes API server in all versions allow an attacker who is able to create a ClusterIP service and set the spec.externalIPs field, to intercept traffic to that IP address. Additionally, an attacker who is able to patch the status (which is considered a privileged operation and should not typically be granted to users) of a LoadBalancer service can set the status.loadBalancer.ingress.ip to similar effect.. EPSS estimates a 9.27% chance of exploitation in the next 30 days.

Description

Kubernetes API server in all versions allow an attacker who is able to create a ClusterIP service and set the spec.externalIPs field, to intercept traffic to that IP address. Additionally, an attacker who is able to patch the status (which is considered a privileged operation and should not typically be granted to users) of a LoadBalancer service can set the status.loadBalancer.ingress.ip to similar effect.

Metrics

CVSS 3.1

5/10

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS Probability

9.27%

94.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-283

Affected Software

Vendor	Product	Versions
Kubernetes	Kubernetes	All versions
Oracle	Communications Cloud Native Core Network Slice Selection Function	1.2.1
Oracle	Communications Cloud Native Core Policy	1.15.0
Oracle	Communications Cloud Native Core Service Communication Proxy	1.14.0

References

https://github.com/kubernetes/kubernetes/issues/97076Exploit, Third Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/iZWsF9nbKE8Mailing List, Third Party Advisory
https://kubernetes.io/blog/2026/05/26/reconciling-unfixed-kubernetes-cves/
https://lists.apache.org/thread.html/r0c76b3d0be348f788cd947054141de0229af00c540564711e828fd40%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/r1975078e44d96f2a199aa90aa874b57a202eaf7f25f2fde6d1c44942%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/rcafa485d63550657f068775801aeb706b7a07140a8ebbdef822b3bb3%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/rdb223e1b82e3d7d8e4eaddce8dd1ab87252e3935cc41c859f49767b6%40%3Ccommits.druid.apache.org%3E
https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
https://github.com/kubernetes/kubernetes/issues/97076Exploit, Third Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/iZWsF9nbKE8Mailing List, Third Party Advisory
https://lists.apache.org/thread.html/r0c76b3d0be348f788cd947054141de0229af00c540564711e828fd40%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/r1975078e44d96f2a199aa90aa874b57a202eaf7f25f2fde6d1c44942%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/rcafa485d63550657f068775801aeb706b7a07140a8ebbdef822b3bb3%40%3Ccommits.druid.apache.org%3E
https://lists.apache.org/thread.html/rdb223e1b82e3d7d8e4eaddce8dd1ab87252e3935cc41c859f49767b6%40%3Ccommits.druid.apache.org%3E
https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory

Timeline

Published: Jan 21, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8554?

How severe is CVE-2020-8554?

CVE-2020-8554 has a CVSS score of 5/10 (MEDIUM severity). The EPSS model estimates a 9.27% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8554?

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.

Are you affected by CVE-2020-8554?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST