What is CVE-2026-4164?

CVE-2026-4164 is a critical-severity vulnerability in Wavlink Wl-Wn578w2, 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-2026-4164?

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

RCE in Wavlink Wl-Wn578w2

CVE-2026-4164

A flaw has been found in Wavlink WL-WN578W2 221110. Impacted is the function Delete_Mac_list/SetName/GuestWifi of the file /cgi-bin/wireless.cgi of the component POST Request Handler. Executing a manipulation can lead to command injection. It is possible to launch the attack remotely. The exploit has been published and may be used. It is recommended to upgrade the affected component.

EPSS: 0.021 (79.3th 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-wn578w2 — versions 221110

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 (third-party-advisory)
cna@vuldb.com (related)
cna@vuldb.com (exploit)
cna@vuldb.com (patch)

Frequently asked questions

What is CVE-2026-4164?: CVE-2026-4164 is a critical-severity vulnerability in Wavlink Wl-Wn578w2, 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-2026-4164?: Critical severity. CVSS v3 base score is 9.8 out of 10.