Access Control Issues in D-Link Network Storage Devices
CVE-2026-4194

6.9MEDIUM

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-4194?

A vulnerability in multiple D-Link network storage devices allows attackers to manipulate the cgi_set_wto function in the system_mgr.cgi file, leading to improper access controls. This flaw enables remote exploitation, potentially compromising the security of sensitive data stored on affected devices. With the exploit now publicly available, users are advised to take immediate measures to secure their systems.

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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-2026-4194 - Proof of Concept

References

https://vuldb.com/?id.351106
vdb-entrytechnical-description
https://vuldb.com/?ctiid.351106
signaturepermissions-required
https://vuldb.com/?submit.769853
third-party-advisory

CVSS V4

Score:
6.9
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

pjq123 (VulDB User)
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