Buffer Overflow in Tenda AC20 Router due to WifiExtraSet Function
CVE-2025-13258

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ac20
Vendor
CVE Published:
17 November 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-13258?

A vulnerability has been identified in the Tenda AC20 router due to a buffer overflow in the WifiExtraSet function. This weakness can be exploited remotely through the manipulation of the wpapsk_crypto argument within the affected file. As the exploit is publicly available, it poses a significant risk to users operating firmware version 16.03.08.12 or earlier. It is crucial for users to apply updates or mitigations to safeguard their devices from potential attacks.

Affected Version(s)

AC20 16.03.08.0

AC20 16.03.08.1

AC20 16.03.08.2

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-2025-13258 - Proof of Concept

References

https://vuldb.com/?id.332593
vdb-entrytechnical-description
https://vuldb.com/?ctiid.332593
signaturepermissions-required
https://vuldb.com/?submit.688716
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

Yun Zhang (VulDB User)
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CVE-2025-13258 : Buffer Overflow in Tenda AC20 Router due to WifiExtraSet Function