Stack-Based Buffer Overflow in Tenda AC18 Router
CVE-2025-11325

8.7HIGH

Key Information:

Vendor

Tenda
Status
Ac18
Vendor
CVE Published:
6 October 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-11325?

A security flaw has been identified in the Tenda AC18 Router, specifically in the file /goform/fast_setting_pppoe_set. An attacker can exploit this vulnerability by manipulating the Username argument, leading to a stack-based buffer overflow. This flaw allows for potential remote exploitation, raising concerns about device security. The details of the exploit have already been made publicly available, making it imperative for users to apply security measures promptly to mitigate risks.

Affected Version(s)

AC18 15.03.05.19(6318)

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-2025-11325 - Proof of Concept

References

https://vuldb.com/?id.327208
vdb-entrytechnical-description
https://vuldb.com/?ctiid.327208
signaturepermissions-required
https://vuldb.com/?submit.664527
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_miemie (VulDB User)
JSON
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CVE-2025-11325 : Stack-Based Buffer Overflow in Tenda AC18 Router