by Kastro CVE-2026-7374
Red Hat Red Hat Container Native Virtualization 4.12 — Kubevirt: kubevirt virt-handler: privilege escalation and node compromise via symlink following vulnerability
Description · from the CVE record
A flaw was found in KubeVirt's virt-handler component. This vulnerability allows an authenticated OpenShift user with edit permissions in a single namespace to exploit improper symlink validation when connecting to virtual machine console sockets. By replacing the console socket with a symlink to the host's container runtime (CRI-O) socket, an attacker can hijack virt-handler's privileged connection. This enables the attacker to access any Unix socket on the host, potentially leading to full control of the node and the entire cluster.
Affected
ProductAffectedFixed inSource
kubevirt< 1.6.61.6.6CNA
kubevirt1.7.0 – < 1.7.41.7.4CNA
kubevirt1.8.0 – < 1.8.31.8.3CNA
Red Hat Container Native Virtualization 4.12see advisory1779375376CNA
Red Hat Container Native Virtualization 4.13see advisory1778999881CNA
Red Hat Container Native Virtualization 4.14see advisory1779321599CNA
Red Hat Container Native Virtualization 4.15see advisory1778859977CNA
Red Hat Container Native Virtualization 4.16see advisory1778861274CNA
Red Hat Container Native Virtualization 4.17see advisory1779174925CNA
Red Hat Container Native Virtualization 4.18see advisory1778887155CNA
Red Hat Container Native Virtualization 4.19see advisory1779289071CNA
Red Hat Container Native Virtualization 4.20see advisory1779288737CNA
Scores by source
redhat (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
redhat-SADP (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total