CVE-2026-41923
Critical
Description
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.
SeverityCritical
CVSS9.3
Exploit probability—
ProductWDR201A WiFi Extender
PublishedMay 4, 2026
First seenMay 4, 2026
Weakness typeCWE-78OS command injection
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Shenzhen Yipu Commercial and Trading Co., Ltd WDR201A WiFi Extender | v ≤ 1.02.0 | — |
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