CVE-2026-40627

Deferred Deferred - Pending Action

OS Command Injection in Totolink X2000R Router

Publication date: 2026-10-20

Last updated on: 2026-10-28

Assigner: Talos

Description

An os command injection vulnerability exists in the boa formWsc targetAPSsid functionality of Totolink X2000R TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327. A specially crafted HTTP request can lead to arbitrary code execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

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Meta Information

Published

2026-10-20

Last Modified

2026-10-28

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-40627

Affected Vendors & Products

Vendor	Product	Version / Range
totolink	Totolink	TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327

Helpful Resources

Exploitability

CWE

KEV

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.

Attack-Flow Graph

Executive Summary

This is an OS command injection vulnerability in Totolink X2000R router firmware version TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327. It allows an attacker to execute arbitrary commands on the system by sending a specially crafted HTTP request to the formWsc targetAPSsid functionality. The vulnerability requires authentication to exploit.

Detection Guidance

Detecting this vulnerability requires checking for vulnerable Totolink X2000R firmware versions and inspecting HTTP requests for the formWsc targetAPSsid parameter. Monitor network traffic for unusual POST requests to /cgi-bin/total.cgi with the formWsc targetAPSsid parameter. Check system logs for unauthorized command execution attempts.

Impact Analysis

An attacker could gain full control over the affected router, allowing them to execute arbitrary code, steal sensitive data, or use the device as a pivot point to attack other systems on the network. This could lead to unauthorized access, data breaches, or disruption of network services.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR and HIPAA by enabling unauthorized access to personal or sensitive data. Organizations may face legal penalties, loss of customer trust, and increased regulatory scrutiny if such a breach occurs due to inadequate security measures.

Mitigation Strategies

Immediately update the Totolink X2000R firmware to the latest patched version. Disable remote administration access if not required. Restrict network access to the device's web interface. Monitor for suspicious activity and apply network segmentation to limit exposure.

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