CVE-2020-8554
Kubernetes man in the middle using LoadBalancer or ExternalIPs
MEDIUM 5.0EPSS 9.3%
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.
- Affected
- Kubernetes
- CVSS v3.1 NVD
- 5.0 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L - CVSS v3.1 LIGGITT
- 6.3 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L - CVSS v2.0 NVD
- 6.0 MEDIUM
AV:N/AC:M/Au:S/C:P/I:P/A:P - EPSS
- 9.27% chance of exploitation in the next 30 days, 95th percentile
- Published
- 2021-01-21
- Updated
- 2026-06-01
Proof-of-concept exploits (6)
- kubernetes/kubernetes/issues/97076128231★ · 2026-10-15
- Dviejopomata/CVE-2020-85540★ · 2021-01-22
- alebedev87/gatekeeper-cve-2020-85540★ · 2021-02-09
- jrmurray000/CVE-2020-85541★ · 2021-02-07
- twistlock/k8s-cve-2020-8554-mitigations1★ · 2020-12-22
- raesene/vuln_pocs5★ · 2026-09-24
Security advisories
- https://groups.google.com/g/kubernetes-security-announce/c/iZWsF9nbKE8
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- advisories/GHSA-j9wf-vvm6-4r9w