CVE-2026-5339 | Tenda G103 1.0.0.5 Setting gpon.lua action_set_net_settings command injection

VDB-354670 · CVE-2026-5339 · GCVE-100-354670 TENDA G103 1.0.0.5 SETTING GPON.LUA ACTION_SET_NET_SETTINGS COMMAND INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.3 $0-$5k 1.09+ Summaryinfo A vulnerability categorized as critical has been discovered in Tenda G103 1.0.0.5. This affects the function action_set_net_settings of the file gpon.lua of the component Setting Handler. Executing a manipulation of the argument authLoid/authLoidPassword/authPassword/authSerialNo/authType/oltType/usVlanId/usVlanPriority can lead to command injection. This vulnerability is registered as CVE-2026-5339. It is possible to launch the attack remotely. Furthermore, an exploit is available. Detailsinfo A vulnerability was found in Tenda G103 1.0.0.5. It has been declared as critical. This vulnerability affects the function action_set_net_settings of the file gpon.lua of the component Setting Handler. The manipulation of the argument authLoid/authLoidPassword/authPassword/authSerialNo/authType/oltType/usVlanId/usVlanPriority with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The advisory is available at github.com. This vulnerability was named CVE-2026-5339. The exploitation appears to be easy. The attack can be initiated remotely. The exploitation requires an enhanced level of successful authentication. Technical details and also a public exploit are known. This vulnerability is assigned to T1202 by the MITRE ATT&CK project. It is possible to download the exploit at github.com. It is declared as proof-of-concept. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Type Router Operating System Vendor Tenda Name G103 Version 1.0.0.5 License commercial Website Vendor: https://www.tenda.com.cn/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.7 VulDB Meta Temp Score: 4.3 VulDB Base Score: 4.7 VulDB Temp Score: 4.3 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Command injection CWE: CWE-77 / CWE-74 / CWE-707 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Access: Public Status: Proof-of-Concept Download: 🔒 Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 04/01/2026 Advisory disclosed 04/01/2026 +0 days VulDB entry created 04/01/2026 +0 days VulDB entry last update Sourcesinfo Vendor: tenda.com.cn Advisory: github.com Status: Not defined CVE: CVE-2026-5339 (🔒) GCVE (CVE): GCVE-0-2026-5339 GCVE (VulDB): GCVE-100-354670 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 04/01/2026 16:14 Changes: 04/01/2026 16:14 (58) Complete: 🔍 Submitter: n0ps1ed Cache ID: 99:2DC:101 Submitinfo Accepted Submit #781132: Tenda G103 G103_V1.0.0.5 Command Injection (by n0ps1ed) Duplicate Submit #XXXXXX: Xxxxx Xxxx Xxxx_xx.x.x.x Xxxxxxx Xxxxxxxxx (by n0ps1ed) Submit #XXXXXX: Xxxxx Xxxx Xxxx_xx.x.x.x Xxxxxxx Xxxxxxxxx (by n0ps1ed) Submit #XXXXXX: Xxxxx Xxxx Xxxx_xx.x.x.x Xxxxxxx Xxxxxxxxx (by n0ps1ed) Submit #XXXXXX: Xxxxx Xxxx Xxxx_xx.x.x.x Xxxxxxx Xxxxxxxxx (by n0ps1ed) Submit #XXXXXX: Xxxxx Xxxx Xxxx_xx.x.x.x Xxxxxxx Xxxxxxxxx (by n0ps1ed) Submit #XXXXXX: Xxxxx Xxxx Xxxx_xx.x.x.x Xxxxxxx Xxxxxxxxx (by n0ps1ed) Submit #XXXXXX: Xxxxx Xxxx Xxxx_xx.x.x.x Xxxxxxx Xxxxxxxxx (by n0ps1ed) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸