CVE-2026-2085Public exploitNetwork attack vector

Root command execution via unescaped USSD value

Published Feb 7, 2026 · Updated Feb 7, 2026

OS command injection in D-Link DWR-M921 1.1.50 allows remote authenticated users to execute commands as root through the USSD endpoint. The sub_419F20 handler inserts the unescaped ussdValue parameter into an at-mngr command with sprintf, then passes the string to system(). Administrator credentials and a request with ussdStatusInput set to ussd are required; embedded single quotes escape the command template and grant full router control.

CVSS severity7.2
High
EPSS probability4.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in D-Link DWR-M921 1.1.50 allows remote authenticated users to execute commands as root through the USSD endpoint. The sub_419F20 handler inserts the unescaped ussdValue parameter into an at-mngr command with sprintf, then passes the string to system(). Administrator credentials and a request with ussdStatusInput set to ussd are required; embedded single quotes escape the command template and grant full router control.

The record

CVE
CVE-2026-2085
Published
Feb 7, 2026
Updated
Feb 7, 2026
Vendor
D-Link
Product
DWR-M921
Classifications
CWE-74, CWE-77, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Feb 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.1.50

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

D-Link · DWR-M921version=1.1.50

Published CVSS scores

7.2VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.3VulDBAV:N/AC:L/Au:M/C:C/I:C/A:C
7.3VulDBCVSS: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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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