Vulnerability · Published May 4, 2026 · Assigned by VulnCheck
CVE-2026-41922WDR201A WiFi Extender OS Command Injection via wireless.cgi
Critical 9.3
In plain English
A critical-severity OS command injection in WDR201A WiFi Extender from Shenzhen Yipu Commercial and Trading Co., Ltd. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 5.0% (higher than 92% of all known vulnerabilities).
Official description
WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the wireless.cgi binary that allows unauthenticated remote attackers to execute arbitrary shell commands by injecting malicious input into the sz11gChannel or PIN POST parameters. Attackers can exploit unsanitized parameter handling in the set_wifi_basic and set_wifi_do_wps functions to achieve remote code execution without authentication.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Shenzhen Yipu Commercial and Trading Co., Ltd | WDR201A WiFi Extender | 0 – through 1.02.0 |
Weakness: CWE-78 · Vector: 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
References
- https://mstreet97.github.io/security-research/iot/vulnerability-disclosure/ai-assisted-research/cybersecurity/cve/2026/05/04/Teaching_the_Machine_Where_to_Look.html technical-description, exploit
- https://www.made-in-china.com/showroom/yeapook/#:~:text=Established%20in%202015.%2CDistrict%2C%20Shenzhen%2C%20Guangdong%2C%20China product
- https://www.vulncheck.com/advisories/wdr201a-wifi-extender-os-command-injection-via-wireless-cgi third-party-advisory