Command Injection Vulnerability in D-Link DNS Products
CVE-2026-4206

5.3MEDIUM

Key Information:

Vendor

D-link
Status
Dns-120
Dnr-202l
Dns-315l
Dns-320
Vendor
CVE Published:
16 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4206?

A command injection vulnerability affects multiple D-Link DNS network storage devices through exploitation of specific functions in the /cgi-bin/dsk_mgr.cgi file. With this vulnerability, an attacker could execute arbitrary commands remotely, putting sensitive data at risk. The issue arises from insufficient input validation in functions responsible for disk management, allowing unauthorized access and potential system compromise. This vulnerability highlights the need for immediate patching and enhanced security measures for affected devices.

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Affected Version(s)

DNR-202L 20260205

DNR-322L 20260205

DNR-326 20260205

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-2026-4206 - Proof of Concept

References

https://vuldb.com/?id.351118
vdb-entrytechnical-description
https://vuldb.com/?ctiid.351118
signaturepermissions-required
https://vuldb.com/?submit.770417
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

Bond_yes (VulDB User)
JSON
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