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CVE-2026-4543

6.3 · MEDIUM

A vulnerability was found in Wavlink WL-WN578W2 221110.

Published Mar 22, 2026CWE-74EPSS 4.89%

Overview

CVE-2026-4543 is a medium-severity vulnerability. It was published on March 22, 2026 and has a CVSS 3.1 base score of 6.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/Litengzheng/vul_db/blob/main/WL-WN578W2/vul_4/README.mdGitHubgithub.com/Litengzheng/vul_db/blob/main/WL-WN578W2/vul_5/README.mdRefvuldb.com/?ctiid.352360Refvuldb.com/?id.352360Refvuldb.com/?submit.774690Refvuldb.com/?submit.774691

How CyberStrike helps

Frequently asked questions

What is CVE-2026-4543?

CVE-2026-4543 is a medium-severity vulnerability. It was published on March 22, 2026 and has a CVSS 3.1 base score of 6.3 (MEDIUM).

How severe is CVE-2026-4543?

This vulnerability has a CVSS 3.1 base score of 6.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-4543?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-4543?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-4543 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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