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CVE-2023-3955

Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation

8.8 HighFix available

A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

3.78%Up 3.7 points since Nov 1, 2023
90%50%10%1%

What each source reports

CVE List Score used 8.8

Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation

A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes.

Record
CVE-2023-3955
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
EUVDEUVD-2023-2793 8.8

A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes.

Record
EUVD-2023-2793
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-03
GitHub AdvisoriesGHSA-q78c-gwqw-jcmc 8.8

Kubernetes privilege escalation vulnerability

A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes.

Record
GHSA-q78c-gwqw-jcmc
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
NVD 8.8

A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes.

Record
CVE-2023-3955
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
OSV 8.8

Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation

A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes.

Record
CVE-2023-3955
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
OSVDEBIAN-CVE-2023-3955 8.8

A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes.

Record
DEBIAN-CVE-2023-3955
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-q78c-gwqw-jcmc 8.8

Kubernetes privilege escalation vulnerability

A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes.

Record
GHSA-q78c-gwqw-jcmc
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
OSVGO-2023-2170 No score

Insufficient input sanitization on Windows nodes leads to privilege escalation in k8s.io/kubernetes and k8s.io/mount-utils

A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes.

Record
GO-2023-2170
Updated
2026-11-02
OSVopenSUSE-SU-2024:14599-1 No score

govulncheck-vulndb-0.0.20241213T205935-1.1 on GA media

These are all security issues fixed in the govulncheck-vulndb-0.0.20241213T205935-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:14599-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
k8s.io/kubernetes
Go
 1.28.0 to 1.28.0
1.28.1
k8s.io/kubernetes
Go
 1.27.0 up to 1.27.5
1.27.5
k8s.io/kubernetes
Go
 1.26.0 up to 1.26.8
1.26.8
k8s.io/kubernetes
Go
 1.25.0 up to 1.25.13
1.25.13
k8s.io/kubernetes
Go
 before 1.24.17
1.24.17
kubernetes
Debian:12
 before 1.20.5+really1.20.2-1
1.20.5+really1.20.2-1
kubernetes
Debian:13
 before 1.20.5+really1.20.2-1
1.20.5+really1.20.2-1
kubernetes
Debian:14
 before 1.20.5+really1.20.2-1
1.20.5+really1.20.2-1
k8s.io/kubernetes
Go
 1.28.0 up to 1.28.1
1.28.1
k8s.io/kubernetes
Go
 before 1.24.17, 1.25.0 up to 1.25.13, 1.26.0 up to 1.26.8, 1.27.0 up to 1.27.5, 1.28.0 up to 1.28.1
1.24.171.25.131.26.81.27.51.28.1
k8s.io/mount-utils
Go
 before 0.24.17, 0.25.0 up to 0.25.13, 0.26.0 up to 0.26.8, 0.27.0 up to 0.27.5, 0.28.0 up to 0.28.1
0.24.170.25.130.26.80.27.50.28.1
govulncheck-vulndb
openSUSE:Tumbleweed
From an advisory covering 21 CVEs
 before 0.0.20241213T205935-1.1
0.0.20241213T205935-1.1

History

History
RecordedChangedSources
affected, facts
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-3955 is a high vulnerability (CVSS 8.8) in Kubernetes, published October 31, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.78%, the 90th percentile. Fixed in k8s.io/kubernetes 1.28.1.

References

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