# CVE-2025-14525: kubevirt (Medium 6.4)

🐹

🐹 Go

Not in CISA KEV

MEDIUM severity

# CVE-2025-14525 — kubevirt

MEDIUM 

CVE-2025-14525 is a medium-severity (CVSS 6.4) CWE-770 vulnerability in kubevirt.io/kubevirt. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

KubeVirt Guest Agent DoS via Excessive Network Interface Reports

Also known asGO-2026-4384

Published

Jan 26, 2026

Updated

Sep 10, 2026

Affected

1 pkg

Patched

None yet

Exploits

None indexed

Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

## Exploitation Status

### No confirmed exploitation observed yet

-   CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-14525.

## EPSS Exploitation Probability

[via FIRST.org ↗](https://www.first.org/epss/)

0.3%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs21th percentile — riskier than 21% of all scored CVEsHighest risk

0.00%0.26%0.53%0.79%0.0%0.3%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from [FIRST.org EPSS](https://www.first.org/epss/).

## How urgent is this, really

## Where this sits among everything scored

## Real-World Exposure

1 pkg affected

🐹`kubevirt.io/kubevirt`

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

## Description

A flaw was found in KubeVirt. A user within a virtual machine (VM), if the guest agent is active, can exploit this by causing the agent to report an excessive number of network interfaces. This action can overwhelm the system's ability to store VM configuration updates, effectively blocking changes to the Virtual Machine Instance (VMI). This allows the VM user to restrict the VM administrator's ability to manage the VM, leading to a Denial of Dervice for administrative operations.

## Affected Packages

1 total

Ecosystem

Package

Vulnerable range

Fix

🐹Go

`kubevirt.io/kubevirt` 

all versions

No fix

## Detection & mitigation playbook

Open-source dependency

1.  ### Detect
    
    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for kubevirt.io/kubevirt, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
    
2.  ### Remediation status
    
    The records we use list no patched version of kubevirt.io/kubevirt for CVE-2025-14525. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.
    
3.  ### Mitigate without a patch
    
    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.
    

## Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatModerate

This vulnerability is rated Moderate for Red Hat OpenShift Virtualization. A malicious VM user can exploit this flaw when the guest agent is active, by causing it to report an excessive number of network interfaces. This action can lead to an application level denial of service for administrative operations by…

Workaround published by Red Hat

> Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Source: [Red Hat security advisory for CVE-2025-14525](https://access.redhat.com/security/cve/cve-2025-14525) (CC BY 4.0)

## Frequently Asked Questions

A flaw was found in KubeVirt. A user within a virtual machine (VM), if the guest agent is active, can exploit this by causing the agent to report an excessive number of network interfaces. This action can overwhelm the system's ability to store VM configuration updates, effectively blocking changes to the Virtual Machine Instance (VMI). This allows the VM user to restrict the VM administrator's ability to manage the VM, leading to a Denial of Dervice for administrative operations.

O3 Security · Impact-Aware SCA

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