Stack-Based Buffer Overflow in Tenda AC20 Network Devices
CVE-2025-14654

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ac20
Vendor
CVE Published:
14 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-14654?

A stack-based buffer overflow vulnerability has been discovered in Tenda AC20 devices running firmware version 16.03.08.12. This issue resides in the function formSetPPTPUserList located in the /goform/setPptpUserList component of the web server component httpd. Malicious actors can exploit this vulnerability remotely by manipulating the argument list, which may lead to unauthorized access and potential system compromise. Publicly available exploits can increase the risk of attacks, emphasizing the need for immediate remediation.

Affected Version(s)

AC20 16.03.08.12

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-2025-14654 - Proof of Concept

References

https://vuldb.com/?id.336387
vdb-entrytechnical-description
https://vuldb.com/?ctiid.336387
signaturepermissions-required
https://vuldb.com/?submit.712899
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

jiahui2888 (VulDB User)
JSON
.
CVE-2025-14654 : Stack-Based Buffer Overflow in Tenda AC20 Network Devices