CVE-2026-7720
Received Received - Intake
Command Injection in Totolink WA300 Firmware

Publication date: 2026-05-04

Last updated on: 2026-05-04

Assigner: VulDB

Description
A weakness has been identified in Totolink WA300 5.2cu.7112_B20190227. The impacted element is the function setLanguageCfg of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. This manipulation of the argument langType causes command injection. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks.
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Meta Information
Published
2026-05-04
Last Modified
2026-05-04
Generated
2026-06-16
AI Q&A
2026-05-04
EPSS Evaluated
2026-06-15
NVD
CVE-2026-7720
EUVD
EUVD-2026-26873
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
totolink wa300 5.2cu.7112_b20190227
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.
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Executive Summary

This vulnerability exists in the Totolink WA300 device, specifically in the function setLanguageCfg within the file /cgi-bin/cstecgi.cgi. It involves manipulation of the argument langType, which leads to command injection. This means an attacker can remotely execute arbitrary commands on the device by exploiting this weakness.

Impact Analysis

The vulnerability allows remote attackers to inject and execute commands on the affected device without user interaction. This can lead to unauthorized control over the device, potentially compromising its integrity, availability, and confidentiality.

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