CVE-2026-35499

Deferred Deferred - Pending Action

Authenticated OS Command Injection in Totolink X2000R Router

Publication date: 2026-10-20

Last updated on: 2026-10-23

Assigner: Talos

Description

An os command injection vulnerability exists in the boa formWsc peerRptPin 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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-20

Last Modified

2026-10-23

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-35499

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 firmware version TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327. It exists in the boa formWsc peerRptPin functionality. An attacker can send a specially crafted HTTP request to execute arbitrary commands on the system with elevated privileges.

Detection Guidance

Detecting this vulnerability requires checking for unauthorized HTTP requests targeting the vulnerable formWsc peerRptPin functionality in Totolink X2000R devices. Monitor network traffic for suspicious POST requests to /cgi-bin/formWsc or similar endpoints with parameters like peerRptPin. Inspect device logs for unexpected command execution attempts or unusual system activity.

Impact Analysis

This vulnerability allows authenticated attackers to execute arbitrary code on the affected device. This could lead to full system compromise, unauthorized access to sensitive data, or disruption of network services. The high CVSS score indicates severe impact potential.

Compliance Impact

This vulnerability allows arbitrary code execution via authenticated HTTP requests, which could lead to unauthorized access to sensitive data. This may violate GDPR's data protection requirements and HIPAA's security rules for protected health information if exploited.

Mitigation Strategies

Immediately update the Totolink X2000R firmware to the latest patched version if available. Disable remote access to the device's web interface if not required. Restrict network access to the device using firewalls or VLAN segmentation. Monitor for unusual activity and consider isolating affected devices until patched.

Hi! I’m here to help you understand CVE-2026-35499. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70

EPSS Chart

Security Radar

News mentioning this vulnerability

Loading related security news...