Command Injection Vulnerability in D-Link DWR-M921 Router
CVE-2026-2168

5.3MEDIUM

Key Information:

Vendor

D-link
Status
Dwr-m921
Vendor
CVE Published:
8 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2168?

A command injection flaw exists in the D-Link DWR-M921 router, specifically within the sub_419920 function found in the /boafrm/formLtefotaUpgradeQuectel file. This vulnerability allows attackers to manipulate the fota_url argument, enabling remote execution of arbitrary commands. Given that an exploit for this vulnerability has already been published, it is crucial for users and network administrators to apply the necessary patches and security measures to protect their devices from potential attacks.

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Affected Version(s)

DWR-M921 1.1.50

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-2026-2168 - Proof of Concept

References

https://vuldb.com/?id.344870
vdb-entrytechnical-description
https://vuldb.com/?ctiid.344870
signaturepermissions-required
https://vuldb.com/?submit.748838
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

LX-66-LX (VulDB User)
JSON
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