CVE-2026-2085CWE-74CWE-77

D-Link DWR-M921 USSD Configuration Endpoint formUSSDSetup sub_419F20 command injection

High · published February 7, 2026

CVSS v4.0
8.6
EPSS
5%
Percentile
92.5
In the wild
Unconfirmed
What it is

🚨 A crafty command injection vulnerability in the D-Link DWR-M921 could let attackers remotely execute commands with just a sneaky tweak to a single parameter! 🔥 Think of it like a waiter taking orders without questioning the customers — they might serve up anything, including a dish nobody asked for! In this case, the vulnerable USSD Configuration Endpoint is taking commands without verifying their origin, leading to potentially disastrous consequences. An attacker could gain full control over the device, running arbitrary commands as if they were the owner. This means they could manipulate settings, intercept data, or even use the device as a pivot point for further attacks on the network. Imagine someone throwing a wrench in your well-oiled machine — it could lead to chaos!

Put simply

Think of it like a waiter taking orders without questioning the customers — they might serve up anything, including a dish nobody asked for! In this case, the vulnerable USSD Configuration Endpoint is taking commands without verifying their origin, leading to potentially disastrous consequences. This vulnerability arises from improper handling of the 'ussdValue' parameter in the function sub_419F20. By injecting malicious commands, an attacker can gain unauthorized access to the system remotely, posing a significant risk if exploited.

What to do

An attacker could gain full control over the device, running arbitrary commands as if they were the owner. This means they could manipulate settings, intercept data, or even use the device as a pivot point for further attacks on the network. Imagine someone throwing a wrench in your well-oiled machine — it could lead to chaos! To secure your DWR-M921, patch to version 1.1.51 immediately, which addresses this vulnerability. Additionally, consider implementing network segmentation and monitoring to detect any unusual behavior that may indicate exploitation attempts. You've got this! With these steps, you can secure your device and keep your network safe! 🛡️

The record
Technical detail
CVSS v4.0
8.6 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
EPSS
0.05217 · 92.5th percentile
Weaknesses
CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'); CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-02-07T12:02Z
EPSS history
Timeline
  • 07 FEB 12:02Z
    D-Link DWR-M921 USSD Configuration Endpoint formUSSDSetup sub_419F20 command injection
    cvelistv5