Vulnerability-Lookup

CNVD-2026-39103

Vulnerability from cnvd - Published: 2026-09-28

Title

Tenda G103命令注入漏洞

Description

Tenda G103是腾达推出的‌GPON光纤接入设备。 Tenda G103存在命令注入漏洞，该漏洞源于组件Setting Handler的文件gpon.lua中函数action_set_net_settings对参数authLoid/authLoidPassword/authPassword/authSerialNo/authType/oltType/usVlanId/usVlanPriority未能正确过滤构造命令特殊字符、命令等，目前没有详细的漏洞细节提供。

Severity

中

Patch Name

Tenda G103命令注入漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级程序修复该安全问题，详情见厂商官网: https://www.tenda.com.cn/

Reference

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

Impacted products

Name
Tenda G103 1.0.0.5

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-5339",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-5339"
    }
  },
  "description": "Tenda G103\u662f\u817e\u8fbe\u63a8\u51fa\u7684\u200cGPON\u5149\u7ea4\u63a5\u5165\u8bbe\u5907\u3002\n\nTenda G103\u5b58\u5728\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7ec4\u4ef6Setting Handler\u7684\u6587\u4ef6gpon.lua\u4e2d\u51fd\u6570action_set_net_settings\u5bf9\u53c2\u6570authLoid/authLoidPassword/authPassword/authSerialNo/authType/oltType/usVlanId/usVlanPriority\u672a\u80fd\u6b63\u786e\u8fc7\u6ee4\u6784\u9020\u547d\u4ee4\u7279\u6b8a\u5b57\u7b26\u3001\u547d\u4ee4\u7b49\uff0c\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u7a0b\u5e8f\u4fee\u590d\u8be5\u5b89\u5168\u95ee\u9898\uff0c\u8be6\u60c5\u89c1\u5382\u5546\u5b98\u7f51:\r\nhttps://www.tenda.com.cn/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-39103",
  "openTime": "2026-09-28",
  "patchDescription": "Tenda G103\u662f\u817e\u8fbe\u63a8\u51fa\u7684\u200cGPON\u5149\u7ea4\u63a5\u5165\u8bbe\u5907\u3002\r\n\r\nTenda G103\u5b58\u5728\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7ec4\u4ef6Setting Handler\u7684\u6587\u4ef6gpon.lua\u4e2d\u51fd\u6570action_set_net_settings\u5bf9\u53c2\u6570authLoid/authLoidPassword/authPassword/authSerialNo/authType/oltType/usVlanId/usVlanPriority\u672a\u80fd\u6b63\u786e\u8fc7\u6ee4\u6784\u9020\u547d\u4ee4\u7279\u6b8a\u5b57\u7b26\u3001\u547d\u4ee4\u7b49\uff0c\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Tenda G103\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Tenda G103 1.0.0.5"
  },
  "referenceLink": "https://github.com/ZZ2266/.github.io/tree/main/Tenda%20G103/authLoid",
  "serverity": "\u4e2d",
  "submitTime": "2026-04-10",
  "title": "Tenda G103\u547d\u4ee4\u6ce8\u5165\u6f0f\u6d1e"
}

CVE-2026-5339 (GCVE-0-2026-5339)

Vulnerability from cvelistv5 – Published: 2026-04-02 14:15 – Updated: 2026-04-02 15:55

Title

Tenda G103 Setting gpon.lua action_set_net_settings command injection

Summary

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.

Severity

5.1 (Medium)


                        
                          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

4.7 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

4.7 (Medium)


                        
                          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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-02 15:36 UTC

CWE

CWE-77 - Command Injection
CWE-74 - Injection

Assigner

VulDB CNA under the mitre root

CNA scorecard B 82/100 over 3865 records in the last 180 days details

References

12 references

URL	Tags
https://vuldb.com/vuln/354670	vdb-entrytechnical-description
https://vuldb.com/vuln/354670/cti	signaturepermissions-required
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	third-party-advisory
https://github.com/ZZ2266/.github.io/tree/main/Te…	exploit
https://www.tenda.com.cn/	product

Impacted products

1 product

Vendor	Product	Version
Tenda	G103	Affected: 1.0.0.5 cpe:2.3:o:tenda:g103_firmware::::::::

Credits

n0ps1ed (VulDB User)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-5339",
                "options": [
                  {
                    "Exploitation": "poc"
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                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-02T15:36:57.243748Z",
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          ],
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          "lang": "en",
          "value": "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."
        }
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      "metrics": [
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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