What is CVE-2026-4163?

CVE-2026-4163 is a critical-severity vulnerability in Wavlink Wl-Wn579a3, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2026-03-16.

How severe is CVE-2026-4163?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Wavlink Wl-Wn579a3

CVE-2026-4163

A vulnerability was detected in Wavlink WL-WN579A3 220323. This issue affects the function SetName/GuestWifi of the file /cgi-bin/wireless.cgi of the component POST Request Handler. Performing a manipulation results in command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading the affected component is recommended.

EPSS: 0.021 (79.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Wavlink Wl-wn579a3 — versions 220323

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (related)
cna@vuldb.com (exploit)
cna@vuldb.com (patch)

Frequently asked questions

What is CVE-2026-4163?: CVE-2026-4163 is a critical-severity vulnerability in Wavlink Wl-Wn579a3, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2026-03-16.
How severe is CVE-2026-4163?: Critical severity. CVSS v3 base score is 9.8 out of 10.