Stack-based Buffer Overflow in D-Link Network Storage Devices
CVE-2026-5214

8.7HIGH

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-2026-5214?

A stack-based buffer overflow vulnerability exists in various D-Link network storage devices due to improper handling of the 'Name' parameter in the cgi_addgroup_get_group_quota_minsize function. This flaw allows attackers to manipulate arguments, leading to potential execution of arbitrary code from a remote location. The exploit has been publicly disclosed, increasing the urgency for organizations to assess and secure their affected D-Link devices.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

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-2026-5214 - Proof of Concept

References

https://vuldb.com/vuln/354349
vdb-entrytechnical-description
https://vuldb.com/vuln/354349/cti
signaturepermissions-required
https://vuldb.com/submit/780439
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

Ziyue Xie (VulDB User)
JSON
.