Is CVE-2026-4543 actively exploited?

No active exploitation of CVE-2026-4543 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4543 be exploited remotely?

Yes. CVE-2026-4543 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4543?

CVE-2026-4543 has a CVSS score of 6.3 (MEDIUM).

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MEDIUM

CVE-2026-4543

CWE-74Published: March 22, 2026· Updated: Mar 23, 2026

6.3

CVSS v3.1

EPSS:0.18%probability of exploitation in 30 daysPercentile:38.8th

Official 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.

NVD Source

Technical Analysis

CVE-2026-4543 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.