Stack-Based Buffer Overflow in D-Link DIR-600L Router
CVE-2026-129353

10CRITICAL

Key Information:

Vendor

D-link
Status
Dir-600l
Vendor
CVE Published:
14 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-129353?

A vulnerability has been identified in the D-Link DIR-600L router, specifically within the authentication functionality of the file 'authentication.cgi'. This vulnerability can be exploited by manipulating the 'id' or 'password' arguments, leading to a stack-based buffer overflow. As a result, attackers may remotely execute arbitrary code on the vulnerable system. The exploit is now public, posing a significant risk to users of the affected firmware versions.

Affected Version(s)

DIR-600L 2.17

DIR-600L 2.17b02

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-2026-129353 - Proof of Concept

References

https://vuldb.com/vuln/437416
vdb-entrytechnical-description
https://vuldb.com/vuln/437416/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-129353
third-party-advisory

CVSS V4

Score:
10
Severity:
CRITICAL
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

ruanyi (VulDB User)
.