CVE-2021-25736
Windows kube-proxy LoadBalancer contention
- State
- Published
- Severity
- 5.8 Medium
- Published
- Oct 30, 2023
- Updated
- Jun 12, 2025
- Reserved
- Jan 21, 2021
Description
Kube-proxy on Windows can unintentionally forward traffic to local processes listening on the same port (“spec.ports[*].port”) as a LoadBalancer Service when the LoadBalancer controller does not set the “status.loadBalancer.ingress[].ip” field. Clusters where the LoadBalancer controller sets the “status.loadBalancer.ingress[].ip” field are unaffected.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.8 Medium | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N | kubernetes |
Weaknesses
- CWE-114 Process Control
Affected Products
| Product | Versions |
|---|---|
KubernetesKubernetes |
|
References
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