OS Command Injection in D-Link DNS-327L and DNS-340L Devices
CVE-2026-82690

9.4CRITICAL

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-82690?

A vulnerability has been identified in D-Link DNS-327L and DNS-340L series devices, specifically in the file /cgi-bin/ve_mgr.cgi. The flaw allows for os command injection through manipulation of the argument f_dev, enabling remote attackers to execute arbitrary commands on vulnerable devices. This poses a significant security risk, as the exploit has been made publicly available, highlighting the need for users to update their firmware to guard against potential unauthorized access.

Affected Version(s)

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-2026-82690 - Proof of Concept

References

https://vuldb.com/vuln/397178
vdb-entrytechnical-description
https://vuldb.com/vuln/397178/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-82690
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)
.