CVE-2025-46599
CNCF K3s Kubernetes kubelet configuration exposes credentials
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2025-46599- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-1188
- Updated
- 2026-11-02
EUVDEUVD-2025-12401
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.
- Record
EUVD-2025-12401- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-864f-7xjm-2jp2
CNCF K3s Kubernetes kubelet configuration exposes credentials
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.
- Record
GHSA-864f-7xjm-2jp2- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-1188
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-46599- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-1188
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2025-46599- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-1188
- Updated
- 2026-11-02
OSVGHSA-864f-7xjm-2jp2
CNCF K3s Kubernetes kubelet configuration exposes credentials
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.
- Record
GHSA-864f-7xjm-2jp2- CVSS 3.1
- 6.8 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-1188
- Updated
- 2026-11-02
OSVGO-2025-3646 No score
CNCF K3s Kubernetes kubelet configuration exposes credentials in github.com/k3s-io/k3s
CNCF K3s Kubernetes kubelet configuration exposes credentials in github.com/k3s-io/k3s.
NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.
(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)
The additional affected modules and versions are: github.com/k3s-io/k3s from v1.32.0-rc1 before v1.32.4-rc1.
- Record
GO-2025-3646- Updated
- 2026-11-02
OSVopenSUSE-SU-2025:15059-1 No score
govulncheck-vulndb-0.0.20250506T153719-1.1 on GA media
These are all security issues fixed in the govulncheck-vulndb-0.0.20250506T153719-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2025:15059-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
github.com/k3s-io/k3sGo |
1.32.0-rc1 up to 1.32.4-rc1 | 1.32.4-rc1 |
github.com/k3s-io/k3sGo |
All versions | None known |
govulncheck-vulndbopenSUSE:Tumbleweed From an advisory covering 12 CVEs |
before 0.0.20250506T153719-1.1 | 0.0.20250506T153719-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-46599 is a medium vulnerability (CVSS 6.8) in K3s, published April 25, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 39th percentile. Fixed in github.com/k3s-io/k3s 1.32.4-rc1.
References
github.com/f1veT/BUG/issues/2
cloud.google.com/kubernetes-engine/docs/how-to/disable-kubelet-readonly-port
nvd.nist.gov/vuln/detail/CVE-2025-46599
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pkg.go.dev/vuln/GO-2025-3646
lists.opensuse.org/archives/list/[email protected]/thread/HNV7O7SNYYY4AFS5HKAPLITKK3B57LE7
suse.com/security/cve/CVE-2019-11243