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NeuVector Enforcer is vulnerable to Command Injection and Buffer overflow

Critical severity GitHub Reviewed Published Oct 21, 2025 in neuvector/neuvector • Updated Oct 30, 2025

Package

gomod github.com/neuvector/neuvector (Go)

Affected versions

>= 5.3.0, < 5.3.5
>= 5.4.0, <= 5.4.6
>= 0.0.0-20230727023453-1c4957d53911, < 0.0.0-20251020133207-084a437033b4

Patched versions

5.3.5
5.4.7
0.0.0-20251020133207-084a437033b4

Description

Impact

A vulnerability was identified in NeuVector, where the enforcer used environment variables CLUSTER_RPC_PORT and CLUSTER_LAN_PORT to generate a command to be executed via popen, without first sanitising their values.

The entry process of the enforcer container is the monitor process. When the enforcer container stops, the monitor process checks whether the consul subprocess has exited. To perform this check, the monitor process uses the popen function to execute a shell command that determines whether the ports used by the consul subprocess are still active.

The values of environment variables CLUSTER_RPC_PORT and CLUSTER_LAN_PORT are used directly to compose shell commands via popen without validation or sanitization. This behavior could allow a malicious user to inject malicious commands through these variables within the enforcer container.

In the patched version, the monitor process validates the values of CLUSTER_RPC_PORT and CLUSTER_LAN_PORT to ensure they contain only valid port numbers before invoking the popen command.

If validation fails, the monitor process exits immediately, causing the enforcer container to terminate. This prevents the execution of any injected or malicious commands.

Patches

Patched versions include release v5.4.7 and above.

Workarounds

There is no workaround for this issue. Users are recommended to upgrade, as soon as possible, to a version of NeuVector that contains the fix.

References

If you have any questions or comments about this advisory:

References

@BinX-Suse BinX-Suse published to neuvector/neuvector Oct 21, 2025
Published to the GitHub Advisory Database Oct 21, 2025
Reviewed Oct 21, 2025
Published by the National Vulnerability Database Oct 30, 2025
Last updated Oct 30, 2025

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(14th percentile)

Weaknesses

Improper Neutralization of Special Elements used in a Command ('Command Injection')

The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Learn more on MITRE.

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Learn more on MITRE.

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Learn more on MITRE.

CVE ID

CVE-2025-54469

GHSA ID

GHSA-c8g6-qrwh-m3vp

Source code

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