Stack-Based Buffer Overflow in Tenda AC21 Router
CVE-2025-13445

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ac21
Vendor
CVE Published:
20 November 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-13445?

A vulnerability has been identified in the Tenda AC21 router, specifically affecting the file /goform/SetIpMacBind. This flaw allows an attacker to manipulate the argument list, potentially leading to a stack-based buffer overflow. The exploit can be executed remotely, which raises serious concerns for user security. With this exploit publicly available, it is crucial for users of the affected product to take immediate action to secure their devices.

Affected Version(s)

AC21 16.03.08.16

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-2025-13445 - Proof of Concept

References

https://vuldb.com/?id.333017
vdb-entrytechnical-description
https://vuldb.com/?ctiid.333017
signaturepermissions-required
https://vuldb.com/?submit.694066
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

jiahui288 (VulDB User)
JSON
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CVE-2025-13445 : Stack-Based Buffer Overflow in Tenda AC21 Router