CVE-2026-25857
OS Command Injection in Tenda G300-F WAN Diagnostic Function
Publication date: 2026-02-07
Last updated on: 2026-03-05
Assigner: VulnCheck
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| tenda | g300-f_firmware | to 16.01.14.2 (inc) |
Helpful Resources
Exploitability
| 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
AI Powered Q&A
Can you explain this vulnerability to me?
The vulnerability exists in the Tenda G300-F router firmware version 16.01.14.2 and earlier. It is an OS command injection flaw in the WAN diagnostic functionality called formSetWanDiag. The router constructs a shell command that uses curl and includes input from the user without properly sanitizing it. This allows a remote attacker who can access the management interface to inject additional shell commands and execute arbitrary code on the device with the privileges of the management process.
How can this vulnerability impact me? :
This vulnerability can allow a remote attacker to execute arbitrary commands on the affected router with management-level privileges. This could lead to full control over the device, enabling the attacker to alter configurations, intercept or redirect network traffic, disrupt network services, or use the device as a foothold for further attacks within the network.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know