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    CVE-2025-64437

    KubeVirt is a virtual machine management add-on for Kubernetes. In versions before 1.5.3 and 1.6.1, the virt-handler does not verify whether the launcher-sock is a symlink or a regular file. This oversight can be exploited, for example, to change the ownership of arbitrary files on the host node to the unprivileged user with UID 107 (the same user used by virt-launcher) thus, compromising the CIA (Confidentiality, Integrity and Availability) of data on the host. To successfully exploit this vulnerability, an attacker should be in control of the file system of the virt-launcher pod. This vulnerability is fixed in 1.5.3 and 1.6.1.

    Published:Nov 7, 2025
    Last Modified:Nov 25, 2025
    EPS:Nov 7, 2025
    EPSS Score:0.00019
    CVSS Score:5

    Affected Products

    Vendor
    Kubevirt
    Product
    Kubevirt

    Exploits

    https://github.com/kubevirt/kubevirt/security/advisories/GHSA-2r4r-5x78-mvqf

    Related CVEs

    CVE-2026-13622 (CVSS 8.8) — A symlink following vulnerability was found in KubeVirt's virt-handler migration proxy. During live migration,…
    CVE-2026-13218 (CVSS 4.2) — A flaw was found in KubeVirt's virt-handler network cache handling. The WriteToCachedFile function writes data…
    CVE-2026-13322 (CVSS 3.8) — A flaw was found in KubeVirt's downward metrics virtio-serial server. The server reads guest requests using te…
    CVE-2026-13201 (CVSS 7.3) — A flaw was found in KubeVirt's safepath package used by virt-handler. The OpenAtNoFollow function uses O_PATH|…
    CVE-2025-64324 (CVSS 8.5) — KubeVirt is a virtual machine management add-on for Kubernetes. The `hostDisk` feature in KubeVirt allows moun…
    CVE-2025-64433 (CVSS 6.5) — KubeVirt is a virtual machine management add-on for Kubernetes. Prior to 1.5.3 and 1.6.1, a vulnerability was …
    CVE-2025-64436 (CVSS 6.9) — KubeVirt is a virtual machine management add-on for Kubernetes. In 1.5.0 and earlier, the permissions granted …
    CVE-2025-64435 (CVSS 5.3) — KubeVirt is a virtual machine management add-on for Kubernetes. Prior to 1.7.0-beta.0, a logic flaw in the vir…
    CVE-2025-64434 (CVSS 4.7) — KubeVirt is a virtual machine management add-on for Kubernetes. Prior to 1.5.3 and 1.6.1, due to the peer veri…
    CVE-2025-64432 (CVSS 4.7) — KubeVirt is a virtual machine management add-on for Kubernetes. Versions 1.5.3 and below, and 1.6.0 contained …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High