OS Command Injection Vulnerability in D-Link DWR-M921 Router
CVE-2026-90703

9.4CRITICAL

Key Information:

Vendor

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90703?

A vulnerability in the D-Link DWR-M921 router has been identified, allowing for OS command injection through the 'folderpath' argument in the /boafrm/formDiskCreateShare function. This issue can be exploited remotely and poses a significant risk to user data and network integrity. Attackers may utilize this flaw to execute arbitrary commands on the system, potentially leading to further compromises within the network.

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-2026-90703 - Proof of Concept

References

https://vuldb.com/vuln/403245
vdb-entrytechnical-description
https://vuldb.com/vuln/403245/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-90703
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)
.