cve.bz

CVE-2021-25736

6.3 mediumEPSS 0.9%

Medium (6.3) in kubernetes kubernetes. EPSS 0.9% chance of exploitation in the next 30 days. Fixed in k8s.io/kubernetes 1.21.0.

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.

Severity

CVSS 3.1

6.3 medium
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
EPSS
0.9% chance of exploitation in the next 30 days; higher than 60% of CVEs (scores of 2026-10-31)
CWE
CWE-114
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-35c7-w35f-xwghGok8s.io/kubernetes<1.21.01.21.0
GO-2023-2159Gok8s.io/kubernetes<1.21.01.21.0

References

Check your stackJSON