Remote Buffer Overflow in Tenda AC18 Router
CVE-2025-11327

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ac18
Vendor
CVE Published:
6 October 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-11327?

A security vulnerability has been identified in the Tenda AC18 router model 15.03.05.19(6318). This issue resides within the /goform/SetUpnpCfg file, where improper handling of the upnpEn argument can lead to a stack-based buffer overflow. An attacker can exploit this vulnerability remotely, enabling unauthorized access to the device. The exploit is publicly disclosed, heightening the need for users to take preventive measures.

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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-2025-11327 - Proof of Concept

References

https://vuldb.com/?id.327210
vdb-entrytechnical-description
https://vuldb.com/?ctiid.327210
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https://vuldb.com/?submit.664532
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

wxhwxhwxh_ (VulDB User)
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