CVE-2026-41925CWE-78

WDR201A WiFi Extender OS Command Injection via adm.cgi (reboot_time)

Critical · published May 4, 2026

CVSS v4.0
9.3
EPSS
4%
Percentile
90.7
In the wild
Unconfirmed
What it is

WDR201A WiFi Extender (HW V2.1, FW LFMZX28040922V1.02) contains an OS command injection vulnerability in the adm.cgi binary's reboot_time function that allows unauthenticated remote attackers to execute arbitrary shell commands by injecting malicious input into the reboot_time POST parameter. Attackers can send a crafted request with shell metacharacters in the reboot_time parameter when reboot_enabled=1 to achieve remote code execution.

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
0.04098 · 90.7th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-05-04T19:15Z
EPSS history
Timeline
  • 04 MAY 19:15Z
    WDR201A WiFi Extender OS Command Injection via adm.cgi (reboot_time)
    cvelistv5