vulnerability
Kubernetes: CVE-2021-25736: Kube-proxy on Windows can unintentionally forward traffic to local processes listening on the same port
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:M/Au:M/C:C/I:N/A:N) | Oct 30, 2023 | Nov 24, 2023 | Aug 11, 2025 |
Severity
6
CVSS
(AV:N/AC:M/Au:M/C:C/I:N/A:N)
Published
Oct 30, 2023
Added
Nov 24, 2023
Modified
Aug 11, 2025
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.
Solutions
kubernetes-upgrade-1_18_19kubernetes-upgrade-1_19_10kubernetes-upgrade-1_20_6
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