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CVE-2025-64434— KubeVirt Improper TLS Certificate Management Handling Allows API Identity Spoofing

Quick assessment

Affected
kubevirt kubevirt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kubevirt是KubeVirt开源的一款虚拟机管理器。 Kubevirt 1.5.3之前版本和1.6.1之前版本存在授权问题漏洞，该漏洞源于virt-handler中的peer验证逻辑存在缺陷，可能导致攻击者冒充virt-api执行特权操作。

CVSS 4.7 · Medium EPSS 0.18% · P7
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I. Basic Information for CVE-2025-64434

Vulnerability Information
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Vulnerability Title
KubeVirt Improper TLS Certificate Management Handling Allows API Identity Spoofing
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Kubevirt 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kubevirt是KubeVirt开源的一款虚拟机管理器。 Kubevirt 1.5.3之前版本和1.6.1之前版本存在授权问题漏洞，该漏洞源于virt-handler中的peer验证逻辑存在缺陷，可能导致攻击者冒充virt-api执行特权操作。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
kubevirt kubevirt < 1.5.3 -

II. Public POCs for CVE-2025-64434

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III. Intelligence Information for CVE-2025-64434

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Patches & Fixes for CVE-2025-64434 (1)

Vendor Advisories for CVE-2025-64434 (1)

Same Patch Batch · kubevirt · 2025-11-07 · 6 CVEs total

CVE-2025-64433 6.5 MEDIUM KubeVirt Arbitrary Container File Read
CVE-2025-64435 5.3 MEDIUM KubeVirt VMI Denial-of-Service (DoS) Using Pod Impersonation
CVE-2025-64437 5.0 MEDIUM KubeVirt Isolation Detection Flaw Allows Arbitrary File Permission Changes
CVE-2025-64432 4.7 MEDIUM KubeVirt Affected by an Authentication Bypass in Kubernetes Aggregation Layer
CVE-2025-64436 KubeVirt Excessive Role Permissions Could Enable Unauthorized VMI Migrations Between Nodes

IV. Related Vulnerabilities

Same product: kubevirt
Same vendor: kubevirt
Same weakness: CWE-287

V. Comments for CVE-2025-64434

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