Insecure Cross-Origin Resource Sharing in Shenzhen Tenda W30E V2 Firmware
CVE-2026-24435

7.1HIGH

Key Information:

Vendor

Shenzhen Tenda Technology Co., Ltd.

Status
W30e V2
Vendor
CVE Published:
26 January 2026

What is CVE-2026-24435?

The firmware of the Shenzhen Tenda W30E V2 suffers from a misconfigured Cross-Origin Resource Sharing (CORS) policy on authenticated administrative endpoints. This flaw allows any attacker-controlled origin to send credentialed requests due to the permissive setting of Access-Control-Allow-Origin: *, in conjunction with Access-Control-Allow-Credentials: true. Such vulnerabilities can lead to unauthorized access and data breaches, emphasizing the importance of stringent CORS policy implementation.

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Affected Version(s)

W30E V2 0 <= 16.01.0.19(5037)

References

https://www.tendacn.com/product/W30E
product
https://www.vulncheck.com/advisories/tenda-w30e-v2-permis...
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Kazuma Matsumoto, a security researcher at GMO Cybersecurity by IERAE, Inc.
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