RCE in Shenzhen Yipu Commercial And Trading Co., Ltd Wdr201a Wifi Extender
CVE-2026-41923
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
EPSS exploit prediction
EPSS: 0.032 (87.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.032 · change: +0.006
Affected products
Weakness classification (CWE)
References
- mstreet97.github.io/security-research/iot/vulnerability-disclosure/ai-assisted-… (technical-description, exploit)
- www.made-in-china.com/showroom/yeapook/ (product)
- www.vulncheck.com/advisories/wdr201a-wifi-extender-os-command-injection-via-int… (third-party-advisory)