Stack-Based Buffer Overflow Vulnerability in Tenda AC18 Router
CVE-2025-11328

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ac18
Vendor
CVE Published:
6 October 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-11328?

A stack-based buffer overflow vulnerability has been discovered in the Tenda AC18 Router's firmware version 15.03.05.19(6318). This vulnerability affects the processing of the '/goform/SetDDNSCfg' file, where improper handling of the 'ddnsEn' argument can be exploited by an attacker to compromise the device remotely. With the exploit details now public, it underscores the necessity for users to update their devices promptly to prevent potential unauthorized access and control.

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Affected Version(s)

AC18 15.03.05.19(6318)

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-2025-11328 - Proof of Concept

References

https://vuldb.com/?id.327211
vdb-entrytechnical-description
https://vuldb.com/?ctiid.327211
signaturepermissions-required
https://vuldb.com/?submit.664533
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
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

Credit

yhryhryhr_ (VulDB User)
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