Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-41926— WDR201A WiFi Extender OS Command Injection via firewall.cgi

Quick assessment

Affected
Shenzhen Yipu Commercial and Trading Co., Ltd WDR201A WiFi Extender
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.

Yeapook WDR201A WiFi Extender是Yeapook公司的一款无线信号扩展设备。 Yeapook WDR201A WiFi Extender HW V2.1版本和FW LFMZX28040922V1.02版本存在操作系统命令注入漏洞，该漏洞源于firewall.cgi二进制文件中五个请求处理程序输入验证不足，可能导致攻击者注入任意shell命令。

AI Predicted 9.8 Difficulty: Easy EPSS 1.90% · P79

Affected Version Matrix 1

VendorProduct Version RangeStatus
Shenzhen Yipu Commercial and Trading Co., Ltd WDR201A WiFi Extender ≤ 1.02.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-41926

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
WDR201A WiFi Extender OS Command Injection via firewall.cgi
Source: CVE Program / CVE List V5
Vulnerability Description
WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the firewall.cgi binary across five request handlers that apply insufficient input validation. Attackers can inject arbitrary shell commands through vulnerable parameters like websURLFilter, websHostFilter, portForward, singlePortForward, and ipportFilter using subshell syntax or unfiltered parameters, with payloads persisting in NVRAM and re-executing on every subsequent firewall.cgi request.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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
Yeapook WDR201A WiFi Extender 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Yeapook WDR201A WiFi Extender是Yeapook公司的一款无线信号扩展设备。 Yeapook WDR201A WiFi Extender HW V2.1版本和FW LFMZX28040922V1.02版本存在操作系统命令注入漏洞，该漏洞源于firewall.cgi二进制文件中五个请求处理程序输入验证不足，可能导致攻击者注入任意shell命令。
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
Shenzhen Yipu Commercial and Trading Co., Ltd WDR201A WiFi Extender 0 ~ 1.02.0 -

II. Public POCs for CVE-2026-41926

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-41926

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-41926 (1)

Same Patch Batch · Shenzhen Yipu Commercial and Trading Co., Ltd · 2026-05-04 · 6 CVEs total

CVE-2026-41924 WDR201A WiFi Extender OS Command Injection via makeRequest.cgi
CVE-2026-41925 WDR201A WiFi Extender OS Command Injection via adm.cgi (reboot_time)
CVE-2026-41922 WDR201A WiFi Extender OS Command Injection via wireless.cgi
CVE-2026-41923 WDR201A WiFi Extender OS Command Injection via internet.cgi
CVE-2026-41927 WDR201A WiFi Extender Stack-Based Buffer Overflow via firewall.cgi

IV. Related Vulnerabilities

Same product: WDR201A WiFi Extender
Same vendor: Shenzhen Yipu Commercial and Trading Co., Ltd
Same weakness: CWE-78

V. Comments for CVE-2026-41926

No comments yet

Leave a comment