CVE-2021-25736

    Dashboard / Vulnerabilities / CVE-2021-25736

    CVE-2021-25736

    Published: 30 Oct 2023Last Modified: 24 Oct 2026

    Summary:

    Details: 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.

    References: https://github.com/kubernetes/kubernetes/pull/99958, https://groups.google.com/g/kubernetes-security-announce/c/lIoOPObO51Q/m/O15LOazPAgAJ, https://security.netapp.com/advisory/ntap-20231221-0003/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- f0d06ae44a2e7ef0c05aecb6e7773222947dd156
    Fixed -91407aecd4edbe8888bb4648ee46e8dae792a20d

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-25736 | CVE-DB