CVE-2026-77031
Received Received - Intake

Command Injection in Tenda CH22 Router

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: VulDB

Description
A vulnerability has been found in Tenda CH22 1.0.0.1. The affected element is the function formcreateFileName of the file /goform/formcreateFileName. The manipulation of the argument fileNameMit leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

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Meta Information

Published
2026-08-20
Last Modified
2026-08-20
Generated
2026-08-20
AI Q&A
2026-08-20
EPSS Evaluated
N/A
NVD
CVE-2026-77031
EUVD
EUVD-2026-63486

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
tenda ch22 1.0.0.1

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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.
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Attack-Flow Graph

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Executive Summary

This vulnerability is a command injection flaw in Tenda CH22 version 1.0.0.1. It exists in the formcreateFileName function within the /goform/formcreateFileName file. The issue arises when the fileNameMit argument is manipulated, allowing an attacker to inject and execute arbitrary commands remotely.

Detection Guidance

This vulnerability involves command injection via the fileNameMit argument in Tenda CH22 devices. To detect it, check network traffic for unusual requests to /goform/formcreateFileName with suspicious payloads in the fileNameMit parameter. Inspect device logs for unauthorized command execution attempts or unexpected file creation.

Impact Analysis

An attacker could exploit this to run unauthorized commands on the affected device. This may lead to unauthorized access, data theft, or disruption of device functionality. The impact depends on the device's role and network access.

Compliance Impact

This vulnerability involves a command injection flaw in Tenda CH22 firmware, allowing remote attackers to execute arbitrary commands. Such flaws can lead to unauthorized data access, modification, or exfiltration, which may violate GDPR's data protection requirements or HIPAA's safeguards for protected health information if exploited.

Mitigation Strategies

Immediately update the Tenda CH22 firmware to the latest version if a patch is available. If no patch exists, restrict access to the device's web interface from untrusted networks. Monitor for exploitation attempts and consider isolating the device until a fix is applied.

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