Buffer Overflow Vulnerability in D-Link DIR-605L Router
CVE-2026-5979

8.7HIGH

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5979?

The D-Link DIR-605L router is affected by a buffer overflow vulnerability within its POST Request Handler. Specifically, the exploit targets the function formVirtualServ located in the /goform/formVirtualServ file. An attacker can manipulate the 'curTime' argument, leading to a buffer overflow condition. This vulnerability allows for remote attacks and can be exploited by unauthorized users. Furthermore, it is important to note that this issue affects models that are no longer maintained by the vendor, increasing the potential risk for users who still operate these devices.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-2026-5979 - Proof of Concept

References

https://vuldb.com/vuln/356533
vdb-entrytechnical-description
https://vuldb.com/vuln/356533/cti
signaturepermissions-required
https://vuldb.com/submit/791852
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)
.