CVE-2021-47802

Tenda D151 and D301 routers contain an unauthenticated configuration download vulnerability that allows remote attackers to retrieve router configuration files. Attackers can send a request to /goform/getimage endpoint to download configuration data including admin credentials without authentication.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.exploit-db.com/exploits/49782	Exploit
https://www.tendacn.com/us/	Product
https://www.vulncheck.com/advisories/tenda-d-d-configuration-download	Broken Link

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:tenda:d151_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:tenda:d151:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:tenda:d301_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:tenda:d301:-:*:*:*:*:*:*:*

History

02 Feb 2026, 17:44

Type	Values Removed	Values Added
References	~~() https://www.exploit-db.com/exploits/49782 -~~	() https://www.exploit-db.com/exploits/49782 - Exploit
References	~~() https://www.tendacn.com/us/ -~~	() https://www.tendacn.com/us/ - Product
References	~~() https://www.vulncheck.com/advisories/tenda-d-d-configuration-download -~~	() https://www.vulncheck.com/advisories/tenda-d-d-configuration-download - Broken Link
First Time		Tenda d301 Tenda d301 Firmware Tenda d151 Firmware Tenda Tenda d151
CPE		cpe:2.3:h:tenda:d151:-:::::::* cpe:2.3:o:tenda:d301_firmware:-:::::::* cpe:2.3:h:tenda:d301:-:::::::* cpe:2.3:o:tenda:d151_firmware:-:::::::*

21 Jan 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-21 18:16

Updated : 2026-02-02 17:44

NVD link : CVE-2021-47802

Mitre link : CVE-2021-47802

CVE.ORG link : CVE-2021-47802

JSON object : View

Products Affected

tenda

d151_firmware
d151
d301
d301_firmware

CWE

CWE-306

Missing Authentication for Critical Function

{"id": "CVE-2021-47802", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.7, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-01-21T18:16:09.423", "references": [{"url": "https://www.exploit-db.com/exploits/49782", "tags": ["Exploit"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.tendacn.com/us/", "tags": ["Product"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/tenda-d-d-configuration-download", "tags": ["Broken Link"], "source": "disclosure@vulncheck.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-306"}]}], "descriptions": [{"lang": "en", "value": "Tenda D151 and D301 routers contain an unauthenticated configuration download vulnerability that allows remote attackers to retrieve router configuration files. Attackers can send a request to /goform/getimage endpoint to download configuration data including admin credentials without authentication."}], "lastModified": "2026-02-02T17:44:40.993", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:tenda:d151_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2FD7066-ABB3-408E-975E-14F59275E51A"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:tenda:d151:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "B231B332-55EF-404E-996A-F9C4A44455FE"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:tenda:d301_firmware:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "09F84573-DE9D-4A80-A570-FCA5A1912861"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:tenda:d301:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "0390E044-3686-470F-812F-B361CECF916E"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "disclosure@vulncheck.com"}