VULNERABILITY INTELLIGENCE

CVE-2021-25736

CVSS score5.8 MEDIUM
EPSS probability0.92%
CISA KEVNot currently listed
Published2023-10-30
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N

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.

Weakness classification

  • CWE-114: Process Control

Primary references