CVE-2026-5338 Details
Description
A security vulnerability has been detected in Tenda G103 1.0.0.5. The affected element is the function action_set_system_settings of the file system.lua of the component Setting Handler. Such manipulation of the argument lanIp leads to command injection. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.
A command injection vulnerability has been identified in the Tenda G103 router, specifically in version 1.0.0.5. The issue arises in the 'action_set_system_settings' function within the 'system.lua' file, part of the LuCI controller. The vulnerability is caused by inadequate sanitization of the 'lanIp' parameter, which is directly appended to system commands without proper validation. This flaw allows authenticated attackers to execute arbitrary commands with root privileges, potentially leading to a complete takeover of the device. The vulnerability can be exploited remotely, and a public exploit is available.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/ZZ2266/.github.io/tree/main/Tenda%20G103/action_set_system_settings | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/submit/781131 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/354669 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/vuln/354669/cti | [email protected] | Permissions RequiredVDB Entry |
| https://www.tenda.com.cn/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
| CWE-74 | Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | [email protected] |
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| tenda g103 firmware | 1.0.0.5 |
CPE
Remediation
| |
| tenda g103 | All versions |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Apr 7, 2026 | Initial Analysis | [email protected] |
| Apr 2, 2026 | New CVE Received | [email protected] |