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CVE-2026-90705— D-Link DWR-M921 Boa Dispatch Table formsysCmd os command injection

Quick assessment

Affected

D-Link DWR-M921

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

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D-Link公司的一款提供无线网络接入与多设备共享功能的路由器。 D-Link DWR-M921 1.1.52版本存在命令注入漏洞，该漏洞源于Boa Dispatch Table组件中文件/boafrm/formsysCmd的函数formsysCmd对参数sysCmd的错误操作，可能导致os命令注入，攻击可远程执行。

CVSS 6.6 · Medium EPSS 2.32% · P84 Updated Sep 16, 2026

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

Vendor	Product	Version Range	Status
D-Link	DWR-M921	`1.1.52`	affected

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I. Basic Information for CVE-2026-90705

Vulnerability Information

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Vulnerability Title

D-Link DWR-M921 Boa Dispatch Table formsysCmd os command injection

Source: CVE Program / CVE List V5

Vulnerability Description

A vulnerability was determined in D-Link DWR-M921 1.1.52. This affects the function formsysCmd of the file /boafrm/formsysCmd of the component Boa Dispatch Table. Executing a manipulation of the argument sysCmd can lead to os command injection. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

OS命令中使用的特殊元素转义处理不恰当(OS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

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	1.1.52	`cpe:2.3:h:d-link:dwr-m921::::::::`

II. Public POCs for CVE-2026-90705

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-90705

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Proof of Concept for CVE-2026-90705 (1)

🔗 D-Link DWR-M921 V1.1.52 - Command Injection in /boafrm/formSysCmd · GitHub Read full article exploit

Vendor Pages for CVE-2026-90705 (1)

Smart Home, SMB and Enterprise solutions | D-Link product

https://www.cve.org/CVERecord?id=CVE-2026-90705

Same Patch Batch · D-Link · 2026-09-14 · 9 CVEs total

CVE-2026-90680	9.9 CRITICAL	D-Link DIR-823G HNAP1 SetStaticRouteSettings strcpy stack-based overflow
CVE-2026-90693	9.9 CRITICAL	D-Link DIR-878 WAN Settings SetWan3Settings stack-based overflow
CVE-2026-90692	9.9 CRITICAL	D-Link DIR-878 Dynamic DNS IPv6 Settings SetDynamicDNSIPv6Settings stack-based overflow
CVE-2026-90699	9.9 CRITICAL	D-Link DWR-M920 formPinManageSetup sub_41E60C os command injection
CVE-2026-90702	9.1 CRITICAL	D-Link DWR-M921 formDiskFormat system os command injection
CVE-2026-90703	9.1 CRITICAL	D-Link DWR-M921 formDiskCreateShare system os command injection
CVE-2026-90704	6.6 MEDIUM	D-Link DWR-M921 formDiskPartition system command injection
CVE-2026-90706	6.6 MEDIUM	D-Link DWR-M921 formWsc os command injection

IV. Related Vulnerabilities

Same product: DWR-M921

Same vendor: D-Link

Same weakness: CWE-78