Stack-based Buffer Overflow in Tenda AC7 Router
CVE-2025-11586

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ac7
Vendor
CVE Published:
10 October 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-11586?

A stack-based buffer overflow vulnerability exists in the Tenda AC7 router due to improper handling of the 'newVersion' argument in the /goform/setNotUpgrade function. This flaw can be exploited remotely, allowing attackers to potentially execute arbitrary code on the device. The issue has been publicly disclosed, raising significant security concerns for users of the affected firmware version 15.03.06.44. It is crucial for users to assess their systems and apply necessary patches to mitigate the risks associated with this vulnerability.

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-2025-11586 - Proof of Concept

References

https://vuldb.com/?id.327908
vdb-entrytechnical-description
https://vuldb.com/?ctiid.327908
signaturepermissions-required
https://vuldb.com/?submit.671597
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_mie (VulDB User)
JSON
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CVE-2025-11586 : Stack-based Buffer Overflow in Tenda AC7 Router