CVE-2025-64436: kubevirt Improper Privilege Management
Vulnerability summary
CVE-2025-64436 is a medium (CVSS 6.9) Improper Privilege Management vulnerability in kubevirt. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 19.1% of scored vulnerabilities. 1 public exploit is recorded.
Advisory lineage
Upstream 0 · Downstream 1 · Related 2Timeline
- 07-11-2025PublishedVulnerability first disclosed.
- 10-11-2025Last modifiedVulnerability information updated.
Description
KubeVirt is a virtual machine management add-on for Kubernetes. In 1.5.0 and earlier, the permissions granted to the virt-handler service account, such as the ability to update VMI and patch nodes, could be abused to force a VMI migration to an attacker-controlled node. This vulnerability could otherwise allow an attacker to mark all nodes as unschedulable, potentially forcing the migration or creation of privileged pods onto a compromised node.
CVSS metrics
7 scores · 5 sources · 2 versions- OSV · WolfiEcosystem advisory · calculated6.9MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- OSV · GoEcosystem advisory · calculated6.9MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- OSV · ChainguardEcosystem advisory · calculated6.9MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- NVDNIST6.9MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- NVDNIST5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS trend
Probability
0.28%
Chance of exploitation in the next 30 days
Percentile
19%
Versus all other CVEs
30-day change
+0.02 pp
From 0.26% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundKubevirt
Maturity: poc
Weaknesses
CWE · root cause- CWE-269Improper Privilege ManagementThe product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
- CWE-276Incorrect Default PermissionsDuring installation, installed file permissions are set to allow anyone to modify those files.
Affected systems
Chainguard16 products
- docker-machine-driver-harvester< 1.0.7-r0 | < 1.0.5-r0
- virt-api-1.6All versions (No fix recorded)
- virt-api-fips-1.6All versions (No fix recorded)
- virt-chroot-1.6All versions (No fix recorded) | < 1.6.5-r0
- virt-chroot-fips-1.6All versions (No fix recorded)
Github.com/kubevirt1 product
- kubevirtAll versions (No fix recorded)
Kubevirt1 product
- kubevirt≤ 1.5.0 | ≤ 1.5.3 | ≥ 1.6.0, ≤ 1.6.1
Kubevirt.io1 product
- kubevirt< 1.7.0
Wolfi1 product
- docker-machine-driver-harvester< 1.0.7-r0 | < 1.0.5-r0
5 vendors · 20 products
References
4 links- github.com/kubevirt/kubevirt/security/advisories/GHSA-7xgm-5prm-v5gcX Refsource CONFIRMAdvisoryWEBExploitVendor Advisory
- github.com/kubevirt/kubevirtPACKAGE