CVE-2026-9435
Received
Received - Intake
Command Injection in Totolink A8000RU
Publication date: 2026-05-25
Last updated on: 2026-05-25
Assigner: VulDB
Description
Description
A vulnerability was detected in Totolink A8000RU 7.1cu.643_b20200521. The affected element is the function setQosCfg of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. Performing a manipulation of the argument enable results in os command injection. Remote exploitation of the attack is possible. The exploit is now public and may be used.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| totolink | a8000ru | 7.1cu.643_b20200521 |
Helpful Resources
Exploitability
CWE
KEV
| 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 A8000RU router, specifically in the setQosCfg function within the /cgi-bin/cstecgi.cgi file of its Web Management Interface.
An attacker can manipulate the 'enable' argument in this function to perform an OS command injection, allowing them to execute arbitrary commands on the device remotely.
The vulnerability can be exploited remotely without any authentication, and a public exploit is available.
How can this vulnerability impact me? :
Exploitation of this vulnerability can lead to full compromise of the affected device.
- Remote attackers can execute arbitrary operating system commands on the router.
- This can result in unauthorized control over the device, potentially allowing attackers to intercept, modify, or disrupt network traffic.
- It may also be used as a foothold to launch further attacks within the network.
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