Read the docs
TI-2026-39026 Aliases CVE-2026-54099GHSA-x82v-328r-gf3h

Improper privilege management in Red Hat OpenShift for Windows Containers 10.19

Priority LOW 39CWE-269Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 5 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-269.

Summary

A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. The WICD CSR auto-approver validates that a Certificate Signing Request contains the organization system:wicd-nodes but does not reject additional organization values such as system:masters. A compromised Windows worker node that holds WICD credentials can submit a CSR that is auto-approved and signed by the cluster, yielding a client certificate that grants cluster-administrator privileges and enabling full cluster takeover.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00131 2nd percentileScored 2026-11-07
Fix Partial Red Hat: 5 advisoriesRed Hat: 5 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat OpenShift for Windows Containers 10.19—1789075615Patch availableCNA
Red HatRed Hat OpenShift for Windows Containers 10.20—1789075603Patch availableCNA
Red HatRed Hat OpenShift for Windows Containers 10.21—1787065708Patch availableCNA
Red HatRed Hat OpenShift for Windows Containers 10.22—1783692800Patch availableCNA
Red HatRed Hat OpenShift for Windows Containers 11.0—1793279001Patch availableCNA
Red HatRed Hat OpenShift Container Platform 4——No fix listedCNA
Red HatRed Hat OpenShift Container Platform 4——No fix listedCNA
  • Red Hat OpenShift for Windows Containers 10.19 VendorRed Hat Affected — Fixed in 1789075615 Patch available CNA
  • Red Hat OpenShift for Windows Containers 10.20 VendorRed Hat Affected — Fixed in 1789075603 Patch available CNA
  • Red Hat OpenShift for Windows Containers 10.21 VendorRed Hat Affected — Fixed in 1787065708 Patch available CNA
  • Red Hat OpenShift for Windows Containers 10.22 VendorRed Hat Affected — Fixed in 1783692800 Patch available CNA
  • Red Hat OpenShift for Windows Containers 11.0 VendorRed Hat Affected — Fixed in 1793279001 Patch available CNA
  • Red Hat OpenShift Container Platform 4 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat OpenShift Container Platform 4 VendorRed Hat Affected — Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:redhat:openshift_container_platform:*:*:*:*:*:*:*:*4.0 to before 4.22.1VulnerableRed Hat
cpe:2.3:a:redhat:windows_machine_config_operator:-:*:*:*:*:*:*:*not specified by NVDVulnerableRed Hat
  • cpe:2.3:a:redhat:openshift_container_platform:*:*:*:*:*:*:*:* Versions 4.0 to before 4.22.1 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:windows_machine_config_operator:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Red Hat

Remediation

Red Hat 5 advisories

  • RHSA-2026:94562 Released 2026-11-03 · Red Hat rating Critical
    Red Hat OpenShift for Windows Containers 11.0 product release
    • Red Hat OpenShift for Windows Containers 11.0 registry.redhat.io/openshift4-wincw/windows-machine-config-rhel9-operator
  • RHSA-2026:82440 Released 2026-10-13 · Red Hat rating Important
    Red Hat OpenShift for Windows Containers 10.20.2 product release
    • Red Hat OpenShift for Windows Containers 10.20 registry.redhat.io/openshift4-wincw/windows-machine-config-rhel9-operator
  • RHSA-2026:81397 Released 2026-10-12 · Red Hat rating Important
    Red Hat OpenShift for Windows Containers 10.19.3 product release
    • Red Hat OpenShift for Windows Containers 10.19 registry.redhat.io/openshift4-wincw/windows-machine-config-rhel9-operator
Show 2 more Red Hat advisories
  • RHSA-2026:61780 Released 2026-08-31 · Red Hat rating Important
    Red Hat OpenShift for Windows Containers 10.21.2 product release
    • Red Hat OpenShift for Windows Containers 10.21 registry.redhat.io/openshift4-wincw/windows-machine-config-rhel9-operator
  • RHSA-2026:47173 Released 2026-07-28 · Red Hat rating Important
    Red Hat OpenShift for Windows Containers 10.22.1 product release
    • Red Hat OpenShift for Windows Containers 10.22 registry.redhat.io/openshift4-wincw/windows-machine-config-rhel9-operator

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Red Hat OpenShift Container Platform 4, Red Hat OpenShift for Windows Containers 10.19 and 3 more products — RHSA-2026:47173

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-39027 Windows-machine-config-operator: windows-machine-config-operator: ssh host key not verified enables credential theftPriority LOW 38
    Show all 2 records → Advisory →
  • Advisory ·

    Red Hat OpenShift Container Platform 4, Red Hat OpenShift for Windows Containers 10.19 and 3 more products — RHSA-2026:61780

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-39027 Windows-machine-config-operator: windows-machine-config-operator: ssh host key not verified enables credential theftPriority LOW 38
    Show all 2 records → Advisory →
Show 2 more groups
  • Advisory ·

    Red Hat OpenShift Container Platform 4, Red Hat OpenShift for Windows Containers 10.19 and 3 more products — RHSA-2026:81397

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-39027 Windows-machine-config-operator: windows-machine-config-operator: ssh host key not verified enables credential theftPriority LOW 38
    Show all 2 records → Advisory →
  • Advisory ·

    Red Hat OpenShift Container Platform 4, Red Hat OpenShift for Windows Containers 10.19 and 3 more products — RHSA-2026:82440

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-39027 Windows-machine-config-operator: windows-machine-config-operator: ssh host key not verified enables credential theftPriority LOW 38
    Show all 2 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenShift Container Platform 4AffectedNo fix yet
Red Hat OpenShift for Windows Containers 10.19Fixed RHSA-2026:81397
Red Hat OpenShift for Windows Containers 10.20Fixed RHSA-2026:82440
Red Hat OpenShift for Windows Containers 10.21Fixed RHSA-2026:61780
Red Hat OpenShift for Windows Containers 10.22Fixed RHSA-2026:47173
Red Hat OpenShift for Windows Containers 11.0Fixed RHSA-2026:94562
Not affected: 5 products
  • Red Hat OpenShift for Windows Containers 10.19
  • Red Hat OpenShift for Windows Containers 10.20
  • Red Hat OpenShift for Windows Containers 10.21
  • Red Hat OpenShift for Windows Containers 10.22
  • Red Hat OpenShift for Windows Containers 11.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54099
  2. 2026-10-03 Alias added: GHSA-x82v-328r-gf3h
  3. 2026-10-12 Fix available: openshift4-wincw/windows-machine-config-rhel9-operator@1789075615 · CNA
  4. 2026-10-12 1 new reference · CNA
  5. 2026-10-13 Fix available: RHSA-2026:81397 · Red Hat
  6. 2026-10-13 Fix available: Red Hat OpenShift for Windows Containers 10.19 · Red Hat
  7. 2026-10-14 Fix available: RHSA-2026:82440 · Red Hat
  8. 2026-10-14 Fix available: openshift4-wincw/windows-machine-config-rhel9-operator@1789075603 · CNA
  9. 2026-10-14 1 new reference · CNA
  10. 2026-10-15 Fix available: Red Hat OpenShift for Windows Containers 10.20 · Red Hat
  11. 2026-11-04 Fix available: openshift4-wincw/windows-machine-config-rhel9-operator@1793279001 · CNA
  12. 2026-11-04 1 new reference · CNA
  13. 2026-11-04 Fix available: RHSA-2026:94562 · Red Hat
  14. 2026-11-04 Fix available: Red Hat OpenShift for Windows Containers 11.0 · Red Hat

References

Advisory 8

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-34021 Linux kernel skb coalescing drops shared-frag marker KEVCVSS 3.1HIGH 7.8
  • TI-2026-23989 crypto: algif_aead - Revert to operating out-of-place KEVCVSS 3.1HIGH 7.8
See all 340 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences