CVE-2026-4543CWE-74CWE-77

Wavlink WL-WN578W2 POST Request firewall.cgi command injection

Medium · published March 22, 2026

CVSS v4.0
5.3
EPSS
5%
Percentile
92.3
In the wild
Unconfirmed
What it is

A vulnerability was found in Wavlink WL-WN578W2 221110. The impacted element is an unknown function of the file /cgi-bin/firewall.cgi of the component POST Request Handler. Performing a manipulation of the argument dmz_flag/del_flag results in command injection. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.05079 · 92.3th percentile
Weaknesses
CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'); CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-03-22T09:23Z
EPSS history
Timeline
  • 22 MAR 09:23Z
    Wavlink WL-WN578W2 POST Request firewall.cgi command injection
    cvelistv5