Introduction
Attackers who can influence container environment variables in NeuVector Enforcer deployments could achieve root-level command execution. That undermines the container runtime security controls the deployment relies on. The vulnerability is tracked as CVE-2025-54469, and it directly affects organizations that rely on NeuVector to enforce security in Kubernetes and cloud-native environments.
NeuVector, now maintained by SUSE, is a widely adopted open-source container security platform. Enterprise and government environments deploy it to provide runtime protection, network segmentation, and compliance for Kubernetes clusters and containerized workloads. The Enforcer component handles real-time policy enforcement and network inspection on every node, so a vulnerability in this component is especially serious.
Technical Information
CVE-2025-54469 is a command injection vulnerability in the monitor process of the NeuVector Enforcer container. When the Enforcer container stops, the monitor process checks whether the consul subprocess has exited. To do this, it builds a shell command from the values of the CLUSTER_RPC_PORT and CLUSTER_LAN_PORT environment variables and executes it through the popen function.
The flaw is that the monitor process puts these environment variables directly into the shell command without any validation or sanitization. If an attacker can control the values of these variables, they can inject shell metacharacters and arbitrary commands. For example, setting CLUSTER_RPC_PORT to a value like 18301; malicious_command; # would cause the shell to execute malicious_command with the privileges of the monitor process, which typically runs as root inside the container.
The vulnerability is classified under CWE-78 (Improper Neutralization of Special Elements used in an OS Command). An attacker can execute arbitrary commands inside the Enforcer container, which could lead to full compromise of the node and lateral movement within the Kubernetes cluster. To exploit it, the attacker has to modify the Enforcer's environment variables. If access controls are weak, that may be possible through Kubernetes manifests, Docker Compose files, or other container orchestration configurations.
There are no public code snippets for the vulnerable code path, but multiple advisories and the vendor documentation confirm the mechanism.
Patch Information
The development team released an update in response to the vulnerabilities identified in NeuVector's Enforcer component. Before the update, the Enforcer used the environment variables CLUSTER_RPC_PORT and CLUSTER_LAN_PORT to construct shell commands that it executed through the popen function. It did not properly validate or sanitize those values, which could allow malicious command injection.
In the patched versions (5.4.7 and 5.3.5), the monitor process invokes the consul subprocess directly instead of going through a shell command. With no shell in the path, manipulated environment variables can no longer inject commands. The change removes the dependency on shell command execution, stops the environment variables from being used unsafely, and addresses the vulnerabilities in the Enforcer component.
Patch source: https://github.com/neuvector/neuvector/security/advisories/GHSA-c8g6-qrwh-m3vp
Affected Systems and Versions
CVE-2025-54469 affects NeuVector Enforcer in the following versions:
- All versions prior to 5.4.7
- All versions prior to 5.3.5
Any deployment where the Enforcer component is configured using unsanitized environment variables CLUSTER_RPC_PORT or CLUSTER_LAN_PORT is vulnerable. The risk applies to Kubernetes and to other container orchestration environments where users or automation can set these variables.
Vendor Security History
NeuVector has had critical vulnerabilities before. The most notable is CVE-2023-32188, where insecure JWT token handling let attackers forge authentication tokens and perform unauthorized actions, including remote code execution. The vendor was proactive with CVE-2025-54469. It released fixes before public disclosure and provided clear upgrade guidance. Still, input validation flaws have recurred, and secure coding practices in that area need ongoing improvement.
