CVE-2026-41922

CRITICAL

WDR201A WiFi Extender OS Command Injection via wireless.cgi

Title source: cna

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.

References (3)

Core 3

Core References

Exploit technical-description exploit

https://mstreet97.github.io/security-research/iot/vulnerability-disclosure/ai-assisted-research/cybersecurity/cve/2026/05/04/Teaching_the_Machine_Where_to_Look.html

Product product

https://www.made-in-china.com/showroom/yeapook/#:~:text=Established%20in%202015.%2CDistrict%2C%20Shenzhen%2C%20Guangdong%2C%20China

Third Party Advisory third-party-advisory

https://www.vulncheck.com/advisories/wdr201a-wifi-extender-os-command-injection-via-wireless-cgi

Scores

CVSS v4 9.3

EPSS 0.0498

EPSS Percentile 91.1%

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact total

Details

CWE

CWE-78

Status published

Products (2)

Shenzhen Yipu Commercial and Trading Co., Ltd/WDR201A WiFi Extender < 1.02

Shenzhen Yipu Commercial and Trading Co., Ltd/WDR201A WiFi Extender < 1.02.0

Published May 04, 2026

Tracked Since May 05, 2026