CVE-2026-5339

MEDIUM

Tenda G103 Setting gpon.lua action_set_net_settings command injection

Title source: cna

Description

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.

References (12)

[Vdb Entry, Technical Description] https://vuldb.com/vuln/354670

[Signature, Permissions Required] https://vuldb.com/vuln/354670/cti

[Third Party Advisory] https://vuldb.com/submit/781132

[Third Party Advisory] https://vuldb.com/submit/781133

[Third Party Advisory] https://vuldb.com/submit/781134

[Third Party Advisory] https://vuldb.com/submit/781135

[Third Party Advisory] https://vuldb.com/submit/781142

[Third Party Advisory] https://vuldb.com/submit/781143

[Third Party Advisory] https://vuldb.com/submit/781144

[Third Party Advisory] https://vuldb.com/submit/781145

[Exploit] https://github.com/ZZ2266/.github.io/tree/main/Tenda%20G103/authLoid

[Product] https://www.tenda.com.cn/

Scores

CVSS v3 4.7

EPSS 0.0018

EPSS Percentile 38.9%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-74 CWE-77

Status published

Products (2)

Tenda/G103 1.0.0.5

tenda/g103_firmware 1.0.0.5

Published Apr 02, 2026

Tracked Since Apr 02, 2026