CVE-2026-5339

A vulnerability was detected in Tenda G103 1.0.0.5. The impacted element is the function action_set_net_settings of the file gpon.lua of the component Setting Handler. Performing a manipulation of the argument authLoid/authLoidPassword/authPassword/authSerialNo/authType/oltType/usVlanId/usVlanPriority results in command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used.

Score

CVSS 3.1 8.8 High

Status

Analyzed - cna@vuldb.com

Published

2026-04-02

Last modified

2026-04-02

Weaknesses

CWE-74, CWE-77

Affected products

• G103 Firmware (Tenda)

References

• https://github.com/ZZ2266/.github.io/tree/main/Tenda%20G103/authLoid
• https://vuldb.com/submit/781132
• https://vuldb.com/submit/781133
• https://vuldb.com/submit/781134
• https://vuldb.com/submit/781135
• https://vuldb.com/submit/781142
• https://vuldb.com/submit/781143
• https://vuldb.com/submit/781144
• https://vuldb.com/submit/781145
• https://vuldb.com/vuln/354670
• https://vuldb.com/vuln/354670/cti
• https://www.tenda.com.cn/