OS Command Injection Flaw in D-Link DWR-M921 Router
CVE-2026-90702

9.4CRITICAL

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90702?

A vulnerability has been identified in the D-Link DWR-M921 router, where the function handling disk formatting can be manipulated to inject operating system commands. This can potentially allow remote attackers to execute unauthorized commands on the device. Awareness of this issue is crucial for users to safeguard their systems, especially since the exploit has been publicly disclosed, making it vital to apply mitigating measures promptly.

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-2026-90702 - Proof of Concept

References

https://vuldb.com/vuln/403244
vdb-entrytechnical-description
https://vuldb.com/vuln/403244/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90702
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

H3rmesk1t (VulDB User)
.