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CVE-2026-2085— D-Link DWR-M921 USSD Configuration Endpoint formUSSDSetup sub_419F20 command injection

Quick assessment

Affected
D-Link DWR-M921
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

D-Link DWR-M921是中国友讯（D-Link）公司的一款路由器。 D-Link DWR-M921 1.1.50版本存在命令注入漏洞，该漏洞源于对组件USSD Configuration Endpoint中文件/boafrm/formUSSDSetup函数sub_419F20的参数ussdValue的错误操作，可能导致命令注入。

CVSS 7.2 · High EPSS 5.22% · P92

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-2085

Vulnerability Information
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Vulnerability Title
D-Link DWR-M921 USSD Configuration Endpoint formUSSDSetup sub_419F20 command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in D-Link DWR-M921 1.1.50. Affected is the function sub_419F20 of the file /boafrm/formUSSDSetup of the component USSD Configuration Endpoint. The manipulation of the argument ussdValue leads to command injection. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
D-Link DWR-M921 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
D-Link DWR-M921是中国友讯（D-Link）公司的一款路由器。 D-Link DWR-M921 1.1.50版本存在命令注入漏洞，该漏洞源于对组件USSD Configuration Endpoint中文件/boafrm/formUSSDSetup函数sub_419F20的参数ussdValue的错误操作，可能导致命令注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
D-Link DWR-M921 1.1.50 -

II. Public POCs for CVE-2026-2085

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III. Intelligence Information for CVE-2026-2085

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Vendor Advisories for CVE-2026-2085 (1)

Proof of Concept for CVE-2026-2085 (1)

Vendor Pages for CVE-2026-2085 (1)

Other References for CVE-2026-2085 (1)

Same Patch Batch · D-Link · 2026-02-07 · 4 CVEs total

CVE-2026-2084 7.2 HIGH D-Link DIR-823X set_language os command injection
CVE-2026-2082 4.7 MEDIUM D-Link DIR-823X set_mac_clone os command injection
CVE-2026-2081 4.7 MEDIUM D-Link DIR-823X set_password os command injection

IV. Related Vulnerabilities

Same product: DWR-M921
Same vendor: D-Link
Same weakness: CWE-77

V. Comments for CVE-2026-2085

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