Tenda G103 Setting gpon.lua action_set_net_settings command injection

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Summary

CVECVE-2026-5339
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-02 15:16:53 UTC
Updated2026-04-06 16:07:38 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 5.1 MEDIUM from [email protected]

CVSS:4.0/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

EPSS: 0.001160000 probability, percentile 0.302670000 (date 2026-04-07)

Problem Types: CWE-74 | CWE-77 | CWE-77 Command Injection | CWE-74 Injection

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary5.1MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/C...
4.0CNADECLARED5.1MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
3.1[email protected]Primary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary4.7MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED4.7MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
3.0CNADECLARED4.7MEDIUMCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
2.0[email protected]Secondary5.8AV:N/AC:L/Au:M/C:P/I:P/A:P
2.0CNADECLARED5.8AV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/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

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Tenda G103 - All All All
Operating System Tenda G103 Firmware 1.0.0.5 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Tenda G103 affected 1.0.0.5 Not specified

References

ReferenceSourceLinkTags
github.com/ZZ2266/.github.io/tree/main/Tenda%20G103/authLoid [email protected] github.com Exploit, Third Party Advisory
www.tenda.com.cn [email protected] www.tenda.com.cn Product
vuldb.com/submit/781134 [email protected] vuldb.com Third Party Advisory, VDB Entry
vuldb.com/submit/781135 [email protected] vuldb.com Third Party Advisory, VDB Entry
vuldb.com/vuln/354670 [email protected] vuldb.com Third Party Advisory, VDB Entry
vuldb.com/submit/781132 [email protected] vuldb.com Third Party Advisory, VDB Entry
vuldb.com/submit/781133 [email protected] vuldb.com Third Party Advisory, VDB Entry
vuldb.com/vuln/354670/cti [email protected] vuldb.com Permissions Required, VDB Entry
vuldb.com/submit/781143 [email protected] vuldb.com Third Party Advisory, VDB Entry
vuldb.com/submit/781142 [email protected] vuldb.com Third Party Advisory, VDB Entry
vuldb.com/submit/781145 [email protected] vuldb.com Third Party Advisory, VDB Entry
vuldb.com/submit/781144 [email protected] vuldb.com Third Party Advisory, VDB Entry
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: n0ps1ed (VulDB User) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-04-01T00:00:00.000ZAdvisory disclosed
CNA2026-04-01T02:00:00.000ZVulDB entry created
CNA2026-04-01T16:14:18.000ZVulDB entry last update
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