Buffer Overflow Vulnerability in Tenda AC7 Router by Tenda
CVE-2025-5861

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ac7
Vendor
CVE Published:
9 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-5861?

A buffer overflow vulnerability exists in the Tenda AC7 routers, specifically affecting the 'fromadvsetlanip' function located in the '/goform/AdvSetLanip' file. This vulnerability stems from improper handling of the 'lanMask' argument, enabling an attacker to execute a remote exploit. Due to the nature of this vulnerability, it poses a significant risk to network security, as unauthorized manipulation can lead to potential remote takeover or unintended behavior of the router.

Affected Version(s)

AC7 15.03.06.44

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-2025-5861 - Proof of Concept

References

https://vuldb.com/?id.311620
vdb-entrytechnical-description
https://vuldb.com/?ctiid.311620
signaturepermissions-required
https://vuldb.com/?submit.591960
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_backup (VulDB User)
.
CVE-2025-5861 : Buffer Overflow Vulnerability in Tenda AC7 Router by Tenda