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Advisory severityCritical9.9Vendor: HighRed Hat Linux

Critical [CVE-2026-7374] KubeVirt virt-handler: Privilege escalation and node compromise via symlink following vulnerability

This critical-severity Red Hat Linux advisory covers CVE-2026-7374 affecting Red Hat Container Native Virtualization 4.12, Red Hat Container Native Virtualization 4.13, Red Hat Container Native Virtualization 4.14.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-7374 Source published

VulniPulse record published

CVE-2026-7374
Affected products & platforms
Red Hat LinuxUnclassified
Open source advisory

Summary

KubeVirt virt-handler: Privilege escalation and node compromise via symlink following vulnerability. Red Hat rates this important (CVSS 9.9).

Weakness: CWE-59.

Affected package(s): container-native-virtualization/virt-handler:1779375376, container-native-virtualization/virt-handler-rhel9:1779288737, container-native-virtualization/virt-handler-rhel9:1779174925, container-native-virtualization/virt-handler-rhel9:1779289071, container-native-virtualization/virt-handler-rhel9:1779420069, container-native-virtualization/virt-handler-rhel9:1778859977.

Resolved in Red Hat advisory RHSA-2026:20866 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Container Native Virtualization 4.12; Red Hat Container Native Virtualization 4.13; Red Hat Container Native Virtualization 4.14; Red Hat Container Native Virtualization 4.15; and 6 more.

Is CVE-2026-7374 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-7374 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-7374?

Upgrade to a fixed release named by Red Hat:

  • RHSA-2026:20866

Confirm against the vendor advisory before you patch.

Affected versions
  • container-native-virtualization/virt-handler:1779375376
  • container-native-virtualization/virt-handler-rhel9:1779288737
  • container-native-virtualization/virt-handler-rhel9:1779174925
  • container-native-virtualization/virt-handler-rhel9:1779289071
  • container-native-virtualization/virt-handler-rhel9:1779420069
  • container-native-virtualization/virt-handler-rhel9:1778859977
  • container-native-virtualization/virt-handler-rhel9:1778861274
  • container-native-virtualization/virt-handler-rhel9:1778999881
  • container-native-virtualization/virt-handler-rhel9:1779321599
  • container-native-virtualization/virt-handler-rhel9:1778887155

Official advisory · high-confidence parse· fetched 4 months ago·verify at source

Fixed versions
  • RHSA-2026:20866

Official advisory · high-confidence parse· fetched 4 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Update the affected package(s) to the fixed version shipped in RHSA-2026:20866 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 4 months ago·verify at source

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