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Public proof of conceptFix available

CVE-2023-5528

A public proof of concept exists; no exploitation attested.

  • Published2023-11-14
  • Fixed in1.28.4 · 1.27.8 · 1.26.11 · 1.25.16
  • WeaknessCWE-20

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A security issue was discovered in Kubernetes where a user that can create pods and persistent volumes on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they are using an in-tree storage plugin for Windows nodes.

Timeline

dates in UTC
  1. 2023-11-1421:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-5528?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-5528?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Kubernetesversion to verify
BranchAffectedFixed in
1.28≥ 1.28.0, < 1.28.41.28.4
1.27≥ 1.27.0, < 1.27.81.27.8
1.26≥ 1.26.0, < 1.26.111.26.11
1.x≥ 1.8.0, < 1.25.161.25.16
Fedoraproject fedora
BranchAffectedFixed in
37.x= 37no fix published
38.x= 38no fix published
39.x= 39no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • RHSA-2024:0954 Red Hat Product Security2 products fixed

    Red Hat Security Advisory: Red Hat OpenShift for Windows Containers 10.15.0 security update

  • RHSA-2023:7710 Red Hat Product Security2 products fixed

    Red Hat Security Advisory: Red Hat OpenShift for Windows Containers 7.2.0 security update

  • RHSA-2023:7662 Red Hat Product Security2 products fixed

    Red Hat Security Advisory: Red Hat OpenShift for Windows Containers 6.0.3 security update

Full record on NVD

Fix

  1. Update Kubernetes to 1.28.4 · 1.27.8 · 1.26.11 · 1.25.16
  2. Vendor fix Red Hat Product Security RHSA-2024:0954 · 2 productsFor Windows Machine Config Operator upgrades, see the following documentation: https://docs.openshift.com/container-platform/latest/windows_containers/windows-node-upgrades.html

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionpoc2024-03-16
  • OpenCVESSVC decisionpoc—
  • CNACVSS 3.17.2read 2026-10-23
  • NVDCVSS 3.18.8read 2026-10-23
  • CNAweakness (CWE)CWE-20read 2026-10-23
  • FIRST EPSSEPSS score4.3 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2023-11-14
Last Modified
2026-06-17
NVD status
Analyzed

Frequently asked questions

What is CVE-2023-5528?

A security issue was discovered in Kubernetes where a user that can create pods and persistent volumes on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they are using an in-tree storage plugin for Windows nodes.

Is CVE-2023-5528 actively exploited?

A proof-of-concept exploit exists for CVE-2023-5528, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2023-5528?

CVE-2023-5528 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

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