CVE-2026-5978
Received Received - Intake
OS Command Injection in Totolink A7100RU CGI Handler (Remote

Publication date: 2026-04-09

Last updated on: 2026-04-09

Assigner: VulDB

Description
A security vulnerability has been detected in Totolink A7100RU 7.4cu.2313_b20191024. Affected is the function setWiFiAclRules of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument mode leads to os command injection. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used.
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Meta Information
Published
2026-04-09
Last Modified
2026-04-09
Generated
2026-05-07
AI Q&A
2026-04-10
EPSS Evaluated
2026-05-05
NVD
CVE-2026-5978
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
totolink a7100ru 7.4cu.2313_b20191024
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-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
AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability exists in the Totolink A7100RU router, specifically in the setWiFiAclRules function within the /cgi-bin/cstecgi.cgi file of the CGI Handler component.

An attacker can manipulate the 'mode' argument in this function to perform OS command injection, which means they can execute arbitrary operating system commands on the device.

The attack can be carried out remotely without any authentication, making it highly dangerous.

This vulnerability has been publicly disclosed and exploits are available.


How can this vulnerability impact me? :

Because this vulnerability allows remote OS command injection without authentication, an attacker could gain control over the affected device.

  • They could execute arbitrary commands on the router.
  • This could lead to unauthorized access to the network.
  • It may result in disruption of network services or interception of network traffic.
  • The attacker could potentially use the compromised device as a foothold for further attacks.

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