Improper Access Control in D-Link Network Storage Devices
CVE-2026-5215

5.3MEDIUM

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5215?

A vulnerability exists in various D-Link network storage devices, specifically in the handling of the function cgi_get_ipv6 located in /cgi-bin/network_mgr.cgi. This weakness allows attackers to exploit improper access controls, potentially leading to unauthorized access to sensitive data or configuration settings. The vulnerability affects multiple models, highlighting the importance of securing networked storage devices against unauthorized manipulation.

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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-2026-5215 - Proof of Concept

References

https://vuldb.com/vuln/354351
vdb-entrytechnical-description
https://vuldb.com/vuln/354351/cti
signaturepermissions-required
https://vuldb.com/submit/780440
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Adjacent 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

Ziyue Xie (VulDB User)
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