OS Command Injection Vulnerability in D-Link ShareCenter NAS Devices
CVE-2026-82689

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-2026-82689?

A vulnerability found in D-Link ShareCenter NAS devices allows for OS command injection through the manipulation of user input in the ISO Image Handler. Affected models include DNS-320L, DNS-327L, DNS-340L, and DNS-345, all of which utilize the file /cgi-bin/isomount_mgr.cgi. Attackers can exploit this vulnerability remotely, potentially enabling unauthorized access to the underlying operating system, which could lead to further compromises. Users are advised to take immediate steps to secure 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-2026-82689 - Proof of Concept

References

https://vuldb.com/vuln/397177
vdb-entrytechnical-description
https://vuldb.com/vuln/397177/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-82689
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)
.