CVE-2026-4543

MEDIUM

Wavlink WL-WN578W2 POST Request firewall.cgi command injection

Title source: cna
STIX 2.1

Description

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.

References (6)

Core 6
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-352360 | Wavlink WL-WN578W2 POST Request firewall.cgi command injection
https://vuldb.com/?id.352360
Signature, Permissions Required signature permissions-required
VDB-352360 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/?ctiid.352360
Third Party Advisory third-party-advisory
Submit #774690 | Wavlink WL-WN578W2 V221110 Command Injection
https://vuldb.com/?submit.774690
Third Party Advisory third-party-advisory
Submit #774691 | Wavlink WL-WN578W2 V221110 Command Injection (Duplicate)
https://vuldb.com/?submit.774691

Scores

CVSS v3 6.3
EPSS 0.0338
EPSS Percentile 87.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-74 CWE-77
Status published
Products (2)
Wavlink/WL-WN578W2 221110
wavlink/wl-wn578w2_firmware 221110
Published Mar 22, 2026
Tracked Since Mar 22, 2026