Medium severity · published Nov 7, 2025
CVE-2025-64434
KubeVirt is a virtual machine management add-on for Kubernetes
6.3
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KU
Kubevirt · Kubevirt
before 1.5.3; 1.6.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-64434
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-64434
Patch
https://github.com/kubevirt/kubevirt/commit/231dc69723f331dc02f65a31ab4c3d6869f40d6a
Patch
https://github.com/kubevirt/kubevirt/commit/af2f08a9a186eccc650f87c30ab3e07b669e8b5b
Patch
https://github.com/kubevirt/kubevirt/commit/b9773bc588e6e18ece896a2dad5336ef7a653074
Exploit
https://github.com/kubevirt/kubevirt/security/advisories/GHSA-ggp9-c99x-54gp
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