Command Injection Vulnerability in D-Link Network Attached Storage Devices
CVE-2026-4207

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-2026-4207?

A manipulation vulnerability exists in various D-Link Network Attached Storage devices, enabling remote command injection through the cgi_device/cgi_sms_test/cgi_firmware_upload/cgi_ntp_time in the /cgi-bin/system_mgr.cgi file. This flaw allows attackers to execute arbitrary commands on the affected devices, potentially leading to unauthorized access or control. Users are advised to review their system configurations and apply necessary mitigations to prevent exploitation.

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-2026-4207 - Proof of Concept

References

https://vuldb.com/?id.351119
vdb-entrytechnical-description
https://vuldb.com/?ctiid.351119
signaturepermissions-required
https://vuldb.com/?submit.770420
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)
.