What is CVE-2025-46599?

CVE-2025-46599 is a medium-severity vulnerability in K3s, classified under Initialization of a Resource with an Insecure Default. CVSS score: 6.8/10. Published 2025-04-25.

How severe is CVE-2025-46599?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Is CVE-2025-46599 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in K3s

CVE-2025-46599

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.

Published 2025-04-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.005 (36.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.000

Affected products

K3s — versions 1.32

Weakness classification (CWE)

CWE-1188 — Initialization of a Resource with an Insecure Default

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

Frequently asked questions

What is CVE-2025-46599?: CVE-2025-46599 is a medium-severity vulnerability in K3s, classified under Initialization of a Resource with an Insecure Default. CVSS score: 6.8/10. Published 2025-04-25.
How severe is CVE-2025-46599?: Medium severity. CVSS v3 base score is 6.8 out of 10.
Is CVE-2025-46599 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.