Buffer Overflow Vulnerability in Tenda AC8 Router by Shenzhen Tenda Technology Co., Ltd.
CVE-2025-11120

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ac8
Vendor
CVE Published:
28 September 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-11120?

A weakness has been found in the Tenda AC8 router's formSetServerConfig function located in the /goform/SetServerConfig file. This vulnerability allows an attacker to perform remote manipulation leading to a buffer overflow condition. Publicly available exploits mean that an attacker can potentially compromise devices that use Tenda AC8 v4 firmware version 16.03.34.06, making it imperative for users to update and secure their configurations to prevent unauthorized access and exploitation.

Affected Version(s)

AC8 16.03.34.06

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-2025-11120 - Proof of Concept

References

https://vuldb.com/?id.326201
vdb-entrytechnical-description
https://vuldb.com/?ctiid.326201
signaturepermissions-required
https://vuldb.com/?submit.664065
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

alc9700 (VulDB User)
JSON
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CVE-2025-11120 : Buffer Overflow Vulnerability in Tenda AC8 Router by Shenzhen Tenda Technology Co., Ltd.