OS Command Injection Vulnerability in D-Link ShareCenter NAS Devices
CVE-2026-82691

9.4CRITICAL

Key Information:

Vendor

D-link
Status
Dns-320l
Dns-327l
Dns-340l
Dns-345
Vendor
CVE Published:
31 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-82691?

A potential OS command injection vulnerability has been identified in the D-Link ShareCenter NAS devices, specifically in the CGI Handler component located at /cgi-bin/usb_device.cgi. Attackers may manipulate the f_ups_ip argument to execute arbitrary commands on the operating system from a remote location. This flaw impacts various models including DNS-320L, DNS-327L, DNS-340L, and DNS-345, and has been publicly disclosed, making it critical for affected users to address the issue immediately to safeguard their devices.

Affected Version(s)

DNS-320L 20260717

DNS-327L 20260717

DNS-340L 20260717

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-2026-82691 - Proof of Concept

References

https://vuldb.com/vuln/397179
vdb-entrytechnical-description
https://vuldb.com/vuln/397179/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-82691
third-party-advisory

CVSS V4

Score:
9.4
Severity:
CRITICAL
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

ST4R0001 (VulDB User)
.