Cookie Session Weakness in Tenda W308R v2 by Tenda
CVE-2018-25316

9.3CRITICAL

Key Information:

Vendor

Tenda
Status
W
R V
Vendor
CVE Published:
29 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2018-25316?

The Tenda W308R v2, specifically version V5.07.48, is susceptible to a vulnerability that enables attackers to exploit cookie session weaknesses. By manipulating the admin language cookie, attackers can send crafted GET requests to the goform/AdvSetDns endpoint, successfully altering DNS settings. This flaw allows unauthorized modifications to DNS configurations, potentially redirecting user traffic to harmful websites and exposing users to various cyber threats. It is crucial for users of the affected version to apply security measures to mitigate this risk.

Affected Version(s)

R v 5.07.48

W 5.07.48

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-2018-25316 - Proof of Concept

References

https://www.exploit-db.com/exploits/44373
exploit
https://www.vulncheck.com/advisories/tenda-w308r-v2-cooki...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
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

.