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    CVE-2025-64434

    KubeVirt is a virtual machine management add-on for Kubernetes. Prior to 1.5.3 and 1.6.1, due to the peer verification logic in virt-handler (via verifyPeerCert), an attacker who compromises a virt-handler instance, could exploit these shared credentials to impersonate virt-api and execute privileged operations against other virt-handler instances potentially compromising the integrity and availability of the VM managed by it. 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:0.00012
    CVSS Score:4.7

    Affected Products

    Vendor
    Kubevirt
    Product
    Kubevirt

    Exploits

    https://github.com/kubevirt/kubevirt/security/advisories/GHSA-ggp9-c99x-54gp

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    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-2025-64437 (CVSS 5) — KubeVirt is a virtual machine management add-on for Kubernetes. In versions before 1.5.3 and 1.6.1, the virt-h…
    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-2025-64432 (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