External risk intelligence

NeuVector Enforcer Command Injection Via Environment Variables.

CVE advisorySeverity: CRITICAL (CVSS 9.9)

CVE-2025-54469

The vulnerability exists within internal container environment variables used by the NeuVector enforcer for inter-node communication (Cluster RPC/LAN ports). These ports are intended for intra-cluster traffic and are typically isolated from the public internet, requiring a compromised or privileged internal environment to reach and manipulate.

OS Command Injection

Halo Surface Signal: 2 out of 5 — less likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A vulnerability exists in NeuVector's enforcer process that could allow a malicious user to inject commands by manipulating specific environment variables. This could lead to a compromise of the enforcer container's integrity and potentially broader system access.

Malicious commands can be injected through environment variables.
This could impact container integrity and system access.
Confirm relevance and assess potential exposure.

Attack Path

How an attacker could exploit the issue

An attacker could start by gaining low-privilege access to the enforcer container, where environment variables are used to construct commands for execution. By manipulating these variables, an attacker could inject and execute arbitrary commands within the container, potentially leading to significant compromise.

Requires low-privilege access to the enforcer.
Triggered by manipulating environment variables.
Allows arbitrary command execution within the container.

Live Threat

Current exploitation, exposure, and threat context

A vulnerability exists in NeuVector where un-sanitized environment variables can be used to construct commands. This could allow for the injection of malicious commands within the enforcer container when supported by the advisory, potentially affecting the container's behavior.

Container command execution.
Via specially crafted environment variables.
Compromised enforcer container.

Operational Fix

Recommended remediation, mitigation, and detection steps

The vulnerability within NeuVector's enforcer process due to unsanitized environment variables suggests that platform and security teams responsible for container orchestration and runtime security should take the lead. The initial step involves identifying all instances of the affected NeuVector enforcer, verifying their network exposure, and determining their business criticality before planning remediation.

Platform and security teams own remediation.
Verify enforcer reachability and criticality.
Plan remediation based on identified risk.

Supplementary metadata

CVSS vector

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Frequently asked questions

What is NeuVector and what does the enforcer do?

NeuVector is a container security platform designed to provide runtime protection and visibility for Kubernetes environments. The enforcer is a core component that acts as an agent running within the cluster. Its primary role is to monitor container behavior, enforce security policies, and manage internal communication between nodes using specific network ports.

What is the command injection flaw in CVE-2025-54469?

This vulnerability is classified as CWE-78, which refers to OS Command Injection. It occurs because the enforcer component takes specific environment variables—used for cluster communication ports—and passes them directly into a system command function without sanitizing them first. If an attacker controls these variables, they can append malicious instructions that the system will execute with the privileges of the enforcer container.

How can an attacker trigger this vulnerability?

An attacker triggers this by manipulating the CLUSTER_RPC_PORT or CLUSTER_LAN_PORT environment variables within the enforcer container. This is not triggered by normal network traffic or standard cluster operations. It requires an attacker to already have a foothold inside the enforcer container or the ability to influence its configuration settings to supply the malicious input.

Is my NeuVector installation at risk from the internet?

According to Halo Surface Signal, this is unlikely. Because the vulnerable variables manage intra-cluster traffic ports, they are intended for internal network communication. They are not typically exposed to the public internet, meaning an attacker generally needs to have already compromised a part of your internal environment to reach and interact with these specific configurations.

What steps should I take if I use NeuVector?

First, conduct an inventory to locate all active NeuVector enforcer instances in your environment. Prioritize assessing the security controls that protect access to your container configurations. Consult your official security channels for verified updates or configuration guidance, and evaluate the business criticality of the affected systems to help prioritize your remediation planning.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.