CVE-2026-41926criticalCWE-78

CVE-2026-41926: critical vulnerability in Shenzhen Yipu Commercial and Trading Co., Ltd…

WDR201A WiFi Extender OS Command Injection via firewall.cgi

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48Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 9.3epss 1.2%
WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the firewall.cgi binary across five request handlers that apply insufficient input validation. Attackers can inject arbitrary shell commands through vulnerable parameters like websURLFilter, websHostFilter, portForward, singlePortForward, and ipportFilter using subshell syntax or unfiltered parameters, with payloads persisting in NVRAM and re-executing on every subsequent firewall.cgi request.
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
Affected products
Shenzhen Yipu Commercial and Trading Co., Ltd · WDR201A WiFi Extender
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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