D-Link DWR-M920 formUSSDSetup sub_41CF20 command injection
CVE-2026-11339

5.3MEDIUM

Key Information:

Vendor

D-link
Status
Dwr-m920
Vendor
CVE Published:
5 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-11339?

A vulnerability was detected in D-Link DWR-M920 up to 1.1.50. The affected element is the function sub_41CF20 of the file /boafrm/formUSSDSetup. The manipulation of the argument ussdValue results in command injection. It is possible to launch the attack remotely. The exploit is now public and may be used.

Affected Version(s)

DWR-M920 1.1.0

DWR-M920 1.1.1

DWR-M920 1.1.2

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-2026-11339 - Proof of Concept

References

https://vuldb.com/vuln/368881
vdb-entrytechnical-description
https://vuldb.com/vuln/368881/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-11339
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

kkff33 (VulDB User)
.