CVE-2026-5339
Tenda G103 Setting gpon.lua action_set_net_settings command injection
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.
INFO
Published Date :
April 2, 2026, 3:16 p.m.
Last Modified :
April 29, 2026, 1 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update firmware to the latest version.
- Restrict access to the affected device.
- Monitor network for suspicious activity.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-5339.
| URL | Resource |
|---|---|
| https://github.com/ZZ2266/.github.io/tree/main/Tenda%20G103/authLoid | Exploit Third Party Advisory |
| https://vuldb.com/submit/781132 | Third Party Advisory VDB Entry |
| https://vuldb.com/submit/781133 | Third Party Advisory VDB Entry |
| https://vuldb.com/submit/781134 | Third Party Advisory VDB Entry |
| https://vuldb.com/submit/781135 | Third Party Advisory VDB Entry |
| https://vuldb.com/submit/781142 | Third Party Advisory VDB Entry |
| https://vuldb.com/submit/781143 | Third Party Advisory VDB Entry |
| https://vuldb.com/submit/781144 | Third Party Advisory VDB Entry |
| https://vuldb.com/submit/781145 | Third Party Advisory VDB Entry |
| https://vuldb.com/vuln/354670 | Third Party Advisory VDB Entry |
| https://vuldb.com/vuln/354670/cti | Permissions Required VDB Entry |
| https://www.tenda.com.cn/ | Product |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-5339 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-5339
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-5339 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-5339 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Data Remediation by [email protected]
Apr. 29, 2026
Action Type Old Value New Value Changed CVSS V4.0 Score 5.1 2 -
Initial Analysis by [email protected]
Apr. 06, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-77 Added CPE Configuration AND OR *cpe:2.3:o:tenda:g103_firmware:1.0.0.5:*:*:*:*:*:*:* OR cpe:2.3:h:tenda:g103:-:*:*:*:*:*:*:* Added Reference Type VulDB: https://github.com/ZZ2266/.github.io/tree/main/Tenda%20G103/authLoid Types: Exploit, Third Party Advisory Added Reference Type VulDB: https://vuldb.com/submit/781132 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/submit/781133 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/submit/781134 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/submit/781135 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/submit/781142 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/submit/781143 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/submit/781144 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/submit/781145 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/vuln/354670 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/vuln/354670/cti Types: Permissions Required, VDB Entry Added Reference Type VulDB: https://www.tenda.com.cn/ Types: Product -
New CVE Received by [email protected]
Apr. 02, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L Added CVSS V2 (AV:N/AC:L/Au:M/C:P/I:P/A:P) Added CWE CWE-77 Added CWE CWE-74 Added Reference https://github.com/ZZ2266/.github.io/tree/main/Tenda%20G103/authLoid Added Reference https://vuldb.com/submit/781132 Added Reference https://vuldb.com/submit/781133 Added Reference https://vuldb.com/submit/781134 Added Reference https://vuldb.com/submit/781135 Added Reference https://vuldb.com/submit/781142 Added Reference https://vuldb.com/submit/781143 Added Reference https://vuldb.com/submit/781144 Added Reference https://vuldb.com/submit/781145 Added Reference https://vuldb.com/vuln/354670 Added Reference https://vuldb.com/vuln/354670/cti Added Reference https://www.tenda.com.cn/