CVE-2026-41923
CRITICALWDR201A WiFi Extender OS Command Injection via internet.cgi
Title source: cnaDescription
WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the internet.cgi binary that allows unauthenticated remote attackers to execute arbitrary shell commands by injecting malicious input into the gateway POST parameter. Attackers can exploit unsanitized parameter concatenation in the set_add_routing function to inject shell commands that are executed via popen() with partial output reflected in the HTTP response.
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-internet-cgi
Scores
CVSS v4
9.3
EPSS
0.0071
EPSS Percentile
72.4%
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