8.8

CVE-2023-3955: Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation

Modified
AliasesDEBIAN-CVE-2023-3955CGA-5fp5-gfcj-8qrgCGA-5rfr-4h85-433g
Published 31-10-2023Last modified 13-02-2025

Vulnerability summary

CVE-2023-3955 is a high (CVSS 8.8) Improper Input Validation vulnerability in kubernetes kubelet. EPSS estimates a 3.78% chance of exploitation in the next 30 days, higher than 89.9% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (GitHub, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
3.78%
0%100%
Low · -0.22 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 1 · Related 18
OPENSUSE-SU-2024:14599-1CGA-5Q63-W7M9-2J88CGA-64CM-QQ2Q-4FGQCGA-6VJF-WF55-5XRCCGA-7WM4-7MP5-X545CGA-82W9-56R6-XV4G

Timeline

  1. 31-10-2023
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

3.78%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

Decrease -0.22 pp

From 4.00% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Kubernetes

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard14 products
  • aws-efs-csi-driver< 1.7.0-r6
  • aws-efs-csi-driver-fips< 1.7.0-r5
  • cluster-autoscaler-1.26< 1.26.4-r4
  • cluster-autoscaler-1.26-compat< 1.26.4-r4
  • cluster-autoscaler-1.27< 1.27.3-r6
Wolfi11 products
  • aws-efs-csi-driver< 1.7.0-r6
  • cluster-autoscaler-1.26< 1.26.4-r4
  • cluster-autoscaler-1.26-compat< 1.26.4-r4
  • cluster-autoscaler-1.27< 1.27.3-r6
  • cluster-autoscaler-1.27-compat< 1.27.3-r6
K8s.io2 products
  • kubernetes≥ 1.27.0, < 1.27.5 | ≥ 1.26.0, < 1.26.8 | ≥ 1.25.0, < 1.25.13 | < 1.24.17 | ≥ 1.28.0, < 1.28.1
  • mount-utils≥ 0.28.0, < 0.28.1
Kubernetes2 products
  • kubeletv1.28.0 | ≥ v1.27.0, ≤ v1.27.4 | ≥ v1.26.0, ≤ v1.26.7 | ≥ v1.25.0, ≤ v1.25.12 | ≤ v1.24.16
  • kubernetes< 1.24.17 | ≥ 1.25.0, < 1.25.13 | ≥ 1.26.0, < 1.26.8 | ≥ 1.27.0, < 1.27.5 | ≥ 1.28.0, < 1.28.1
Debian1 product
  • kubernetes< 1.20.5+really1.20.2-1

5 vendors · 30 products

References

20 links
Show all 20 references