CVE-2025-14525
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA 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 service for administrative operations.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA denial-of-service vulnerability in KubeVirt allows a VM user with an active guest agent to report an excessive number of network interfaces, overwhelming the system's ability to store VM configuration updates and blocking VMI changes, effectively preventing administrators from managing the virtual machine.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- None
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify KubeVirt installation and versionRun 'kubectl get kubevirt -A -o jsonpath='{.items[*].status.kubevirtVersion}' or check the kubevirt-operator deployment versionAffected if KubeVirt is installed and the version is within the affected range (if known)
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Check for VMs with guest agent configuredRun 'kubectl get vmi -A -o jsonpath='{range .items[*]}{.metadata.name}{.spec.domain.devices.guestAgentTerminated}{"\n"}{end}' to list VMIs with guest agent settingsAffected if Any VMI has a guest agent interface configured (indicating qemu-guest-agent is expected to report data)
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Verify guest agent is running inside VMsCheck for guest-agent connection status by running 'kubectl get vmi -A -o jsonpath='{range .items[*]}{.metadata.name}{.status.guestAgentInfo}{"\n"}{end}' or inspect the 'guest-agent-connected' conditionAffected if Guest agent is actively connected and reporting to the node
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Inspect network interface configuration on VMIsReview network interface counts via 'kubectl get vmi <name> -o jsonpath='{.spec.domain.devices.interfaces}' or check for unexpectedly high interface counts in the VMI specAffected if A VMI has a large number of network interfaces reported through the guest agent
If KubeVirt is running and any VMs have an active guest agent that can report network interfaces, the environment may be vulnerable to DoS via excessive network interface reports.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement rate limiting or validation on network interface reports in KubeVirt, and consider disabling or restricting the guest agent if not strictly necessary for the VM's operation.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-14525 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-14525 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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