Vulnerability · Published May 4, 2026 · Assigned by VulnCheck
CVE-2026-41925WDR201A WiFi Extender OS Command Injection via adm.cgi (reboot_time)
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 4.0% (higher than 91% of all known vulnerabilities).
Official description
WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the adm.cgi binary's reboot_time function that allows unauthenticated remote attackers to execute arbitrary shell commands by injecting malicious input into the reboot_time POST parameter. Attackers can send a crafted request with shell metacharacters in the reboot_time parameter when reboot_enabled=1 to achieve remote code execution.
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-adm-cgi-reboot-time third-party-advisory