Buffer Overflow Vulnerability in D-Link DIR-605L Router
CVE-2026-5980

8.7HIGH

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5980?

A security flaw exists in the D-Link DIR-605L router, specifically in the function formSetMACFilter. This vulnerability arises from improper handling of the curTime argument within the POST Request Handler, leading to a buffer overflow condition. Attackers can exploit this vulnerability remotely, allowing unauthorized manipulation of MAC filtering settings. The affected firmware version 2.13B01 is no longer supported by D-Link, increasing the risk of exploitation. Users of this router should take immediate measures to secure their devices.

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-2026-5980 - Proof of Concept

References

https://vuldb.com/vuln/356534
vdb-entrytechnical-description
https://vuldb.com/vuln/356534/cti
signaturepermissions-required
https://vuldb.com/submit/791853
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)
.