CNCF K3s 1.32 before 1.32.4-rc1+k3s1 has a Kubernetes kubelet configuration change with the unintended consequence that, in some situations, ReadOnlyPort is set to 10255. For example, the default behavior of a K3s online installation might allow unauthenticated access to this port, exposing credentials.
https://github.com/k3s-io/k3s/issues/12164
https://github.com/k3s-io/k3s/compare/v1.32.3+k3s1...v1.32.4-rc1+k3s1
https://github.com/k3s-io/k3s/commit/097b63e588e3c844cdf9b967bcd0a69f4fc0aa0a
https://github.com/f1veT/BUG/issues/2
https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-12401
https://cloud.google.com/kubernetes-engine/docs/how-to/disable-kubelet-readonly-port
Published: 2025-04-25
Updated: 2026-04-15
Named Vulnerability: GO-2025-3646Named Vulnerability: GHSA-864f-7xjm-2jp2
Base Score: 5.4
Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:N/A:N
Severity: Medium
Base Score: 6.8
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Severity: Medium
EPSS: 0.00451