CVE-2026-41926

WDR201A WiFi Extender OS Command Injection via firewall.cgi

CVSS 9.3 CRITICALEPSS 1.2%CWE-78

Vexday Risk Score

48Atenção

Decisão SSVC (CISA)

Attend

PoC disponível → acompanhar de perto

CVSS 9.3EPSS 1.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Ciclo de vida

04 mai 2026Publicada no NVD

Recomendação: Planejar correção próxima — já existe PoC pública.

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

Produtos afetados

Shenzhen Yipu Commercial and Trading Co., Ltd · WDR201A WiFi Extender

PoCs públicas encontradas — 1

cve_referencemstreet97.github.io/security-research/iot/vulnerability-disclosure/ai-assisted-research/cybersecurity/cve/2026/05/04/Teaching_the_Machine_Where_to_Look.htmlnão verificado

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Referências

https://mstreet97.github.io/security-research/iot/vulnerability-disclosure/ai-assisted-research/cybersecurity/cve/2026/05/04/Teaching_the_Machine_Where_to_Look.html https://www.made-in-china.com/showroom/yeapook/#:~:text=Established%20in%202015.%2CDistrict%2C%20Shenzhen%2C%20Guangdong%2C%20China https://www.vulncheck.com/advisories/wdr201a-wifi-extender-os-command-injection-via-firewall-cgi