Home

Description

WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the wireless.cgi binary that allow unauthenticated remote attackers to execute arbitrary shell commands by injecting malicious input into the sz11gChannel or PIN POST parameters. Attackers can exploit unsanitized parameter handling in the set_wifi_basic and set_wifi_do_wps functions to achieve remote code execution without authentication.

PUBLISHED Reserved 2026-04-22 | Published 2026-05-04 | Updated 2026-05-08 | Assigner VulnCheck




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Product status

Default status
unaffected

Any version
affected

Credits

Matteo Strada finder

Daniele Berardinelli finder

References

mstreet97.github.io/...aching_the_Machine_Where_to_Look.html technical-description exploit

www.made-in-china.com/showroom/yeapook/ product

www.vulncheck.com/...r-os-command-injection-via-wireless-cgi third-party-advisory

cve.org (CVE-2026-41922)

nvd.nist.gov (CVE-2026-41922)

Download JSON