CVE-2026-1689
Unknown Unknown - Not Provided
Remote Command Injection in Tenda HG10 Login Interface

Publication date: 2026-01-30

Last updated on: 2026-04-29

Assigner: VulDB

Description
A vulnerability was detected in Tenda HG10 US_HG7_HG9_HG10re_300001138_en_xpon. The impacted element is the function checkUserFromLanOrWan of the file /boaform/admin/formLogin of the component Login Interface. The manipulation of the argument Host results in command injection. The attack can be launched remotely. The exploit is now public and may be used.
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Meta Information
Published
2026-01-30
Last Modified
2026-04-29
Generated
2026-06-16
AI Q&A
2026-01-30
EPSS Evaluated
2026-06-14
NVD
CVE-2026-1689
EUVD
EUVD-2026-5020
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
tenda hg10_firmware *
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

CVE-2026-1689 is a command injection vulnerability in the Tenda HG10 router firmware, specifically in the function checkUserFromLanOrWan within the /boaform/admin/formLogin file of the Login Interface component. The vulnerability arises because the 'Host' argument is not properly sanitized, allowing an attacker to inject and execute arbitrary system commands remotely without authentication. [1, 2]

Impact Analysis

This vulnerability can impact you by allowing an attacker to remotely execute arbitrary commands on your affected Tenda HG10 router without any authentication. This compromises the confidentiality, integrity, and availability of the device, potentially leading to unauthorized access, data leakage, device malfunction, or denial of service. [1]

Detection Guidance

This vulnerability can be detected by sending specially crafted HTTP requests targeting the 'Host' parameter in the /boaform/admin/formLogin interface of the Tenda HG10 router. Since the vulnerability allows command injection via this parameter, detection involves testing for command injection by injecting benign commands and observing responses or side effects. Specific commands are not provided in the resources, but typical detection involves using curl or similar tools to send requests with payloads in the Host header or parameter to check for command execution. For example, sending a request with a payload like 'Host: ;id;' or similar injection attempts to see if command output is reflected or causes changes. However, no explicit detection commands are listed in the provided resources. [1, 2]

Mitigation Strategies

No known countermeasures or mitigations have been identified at this time for this vulnerability. Immediate steps would include restricting access to the affected device from untrusted networks, monitoring for suspicious activity, and applying any vendor patches or updates once available. Since the exploit is public and the vulnerability is remotely exploitable without authentication, isolating the device and limiting exposure is critical until an official fix is released. [1]

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