Stack-Based Buffer Overflow in Tenda JD12L Router
CVE-2026-13518

8.7HIGH

Key Information:

Vendor

Tenda
Status
Jd12l
Vendor
CVE Published:
29 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-13518?

A vulnerability has been identified in the Tenda JD12L router, specifically in the function fromAddressNat located in the /goform/addressNat file. An attacker can manipulate the 'page' argument, resulting in a stack-based buffer overflow condition. This vulnerability allows for potential remote exploitation, raising serious security concerns. It is crucial for users to remain vigilant and implement necessary security measures, as the exploit details have already been made public and may be actively used by malicious actors.

Affected Version(s)

JD12L 16.03.53.23

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-2026-13518 - Proof of Concept

References

https://vuldb.com/vuln/374526
vdb-entrytechnical-description
https://vuldb.com/vuln/374526/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-13518
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

Vampirensa (VulDB User)
.