Buffer Overflow Vulnerability in D-Link DIR-605L Router
CVE-2026-5981

8.7HIGH

Key Information:

Vendor

D-link
Status
Dir-605l
Vendor
CVE Published:
9 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5981?

A buffer overflow vulnerability has been identified in the D-Link DIR-605L router, specifically affecting the formAdvFirewall function found in the /goform/formAdvFirewall file. By manipulating the curTime argument, remote attackers may exploit this flaw to execute arbitrary code or disrupt the functionality of the router. This issue is particularly concerning for devices that are no longer supported by D-Link, as they do not receive security updates, leaving them vulnerable to exploitation. Users are strongly advised to assess their device's security and, if applicable, upgrade to a supported model.

Affected Version(s)

DIR-605L 2.13B01

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-2026-5981 - Proof of Concept

References

https://vuldb.com/vuln/356535
vdb-entrytechnical-description
https://vuldb.com/vuln/356535/cti
signaturepermissions-required
https://vuldb.com/submit/791854
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

wxhwxhwxh_mie (VulDB User)
.