CVE-2026-18900
Received Received - Intake

Command Injection in H3C NX15 Firmware

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: VulDB

Description
A weakness has been identified in H3C NX15 V100R017. This impacts the function file.exec of the file /api/esps of the component Backend RPC. This manipulation of the argument File causes os command injection. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.

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Meta Information

Published
2026-08-05
Last Modified
2026-08-05
Generated
2026-08-05
AI Q&A
2026-08-05
EPSS Evaluated
N/A
NVD
CVE-2026-18900
EUVD
EUVD-2026-53029

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
h3c nx15 v100r017

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-78 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.
CWE-77 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.

Attack-Flow Graph

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Executive Summary

This vulnerability is an OS command injection flaw in H3C NX15 V100R017 firmware. It exists in the /api/esps endpoint where the file.exec function improperly exposes a system command execution capability. An attacker with valid credentials can send crafted requests to run arbitrary commands as root via the exposed ubus object 'file' with the 'exec' method.

Detection Guidance

Check if your H3C NX15 device is running firmware version NX15V100R017. Inspect web API requests to /api/esps for file.exec method invocations. Use network monitoring tools to detect unusual outbound connections or command executions from the device.

Impact Analysis

An attacker could gain full root access to the device, allowing them to execute any system command, install malware, modify configurations, or exfiltrate sensitive data. This could lead to complete system compromise, unauthorized network access, or disruption of services.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating confidentiality requirements in GDPR and HIPAA. Organizations using affected H3C NX15 devices may face compliance violations, legal penalties, and reputational damage due to potential exposure of sensitive data.

Mitigation Strategies

Apply vendor patches if available. Disable or restrict access to the /api/esps endpoint. Implement strict allowlists for web-exposed RPC methods. Ensure all default credentials are changed and strong authentication is enforced.

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