Unauthenticated Configuration Download Vulnerability in Tenda Routers
CVE-2021-47802

8.7HIGH

Key Information:

Vendor

Shenzhen Tenda Technology Co.,ltd.

Status
Tenda D151 & D301
Vendor
CVE Published:
21 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47802?

The Tenda D151 and D301 routers are susceptible to an unauthenticated configuration download vulnerability. This flaw allows remote attackers to retrieve sensitive router configuration files, including administrative credentials, without requiring any authentication. By sending a request to the /goform/getimage endpoint, an attacker can easily access the configuration data. This vulnerability poses a significant risk as it could lead to further exploitation of the device and compromise the network security.

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Affected Version(s)

Tenda D151 & D301 -

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-47802 - Proof of Concept

References

https://www.exploit-db.com/exploits/49782
exploit
https://www.tendacn.com/us/
product
https://www.vulncheck.com/advisories/tenda-d-d-configurat...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

BenChaliah
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