CVE-2026-41922CWE-78

WDR201A WiFi Extender OS Command Injection via wireless.cgi

Critical · published May 4, 2026

CVSS v4.0
9.3
EPSS
7%
Percentile
93.9
In the wild
Unconfirmed
What it is

WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the wireless.cgi binary that allows 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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
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
EPSS
0.06664 · 93.9th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-05-04T19:04Z
EPSS history
Timeline
  • 04 MAY 19:04Z
    WDR201A WiFi Extender OS Command Injection via wireless.cgi
    cvelistv5