CVE-2026-30703
Critical
Description
A command injection vulnerability exists in the web management interface of the WiFi Extender WDR201A (HW V2.1, FW LFMZX28040922V1.02). The adm.cgi endpoint improperly sanitizes user-supplied input provided to a command-related parameter in the sysCMD functionality.
SeverityCritical
CVSS9.8
Exploit probability—
ProductWiFi Extender WDR201A
PublishedMar 18, 2026
First seenMar 18, 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 |
|---|---|---|
| WiFi Extender WDR201A | HW V2.1, FW LFMZX28040922V1.02 | — |
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