Remote Command Injection in D-Link DWR-M921 Router
CVE-2026-90705

5.1MEDIUM

Key Information:

Vendor

D-link
Status
Dwr-m921
Vendor
CVE Published:
14 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90705?

A vulnerability exists in D-Link's DWR-M921 router version 1.1.52 that allows remote attackers to exploit the 'formsysCmd' function from the Boa Dispatch Table component. By manipulating the 'sysCmd' argument, an attacker may execute arbitrary operating system commands, posing a significant risk to network security. This vulnerability has been publicly disclosed and can be exploited from outside the target network, making it essential for users to take immediate action to secure their devices.

Affected Version(s)

DWR-M921 1.1.52

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-2026-90705 - Proof of Concept

References

https://vuldb.com/vuln/403247
vdb-entrytechnical-description
https://vuldb.com/vuln/403247/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90705
third-party-advisory

CVSS V4

Score:
5.1
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

H3rmesk1t (VulDB User)
.