Stack-Based Buffer Overflow in Tenda JD12L Router
CVE-2026-13519

8.7HIGH

Key Information:

Vendor

Tenda
Status
Jd12l
Vendor
CVE Published:
29 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-13519?

A vulnerability exists in the Tenda JD12L router within the fromNatStaticSetting functionality of the /goform/NatStaticSetting file. The issue arises from improper handling of the argument 'page', which can lead to a stack-based buffer overflow. This vulnerability can be exploited remotely, allowing an attacker to manipulate the device's behavior. The exploit for this vulnerability has been made publicly available, increasing the risk of its exploitation in the wild.

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-2026-13519 - Proof of Concept

References

https://vuldb.com/vuln/374527
vdb-entrytechnical-description
https://vuldb.com/vuln/374527/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-13519
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

Yuanji Wanshu (VulDB User)
.