RCE in Wavlink Wl-wn578w2
CVE-2026-4543
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 result…
EPSS: 0.006 (70.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
Affected products
- Wavlink Wl-wn578w2 — versions 221110
- Wavlink Wl-wn578w2_firmware — versions 221110
Weakness classification (CWE)
References
- VDB-352360 | Wavlink WL-WN578W2 POST Request firewall.cgi command injection (technical-description, Third Party Advisory, VDB Entry, vdb-entry)
- VDB-352360 | CTI Indicators (IOB, IOC, TTP, IOA) (signature, Permissions Required, permissions-required, VDB Entry)
- Submit #774690 | Wavlink WL-WN578W2 V221110 Command Injection (Third Party Advisory, VDB Entry, third-party-advisory)
- Submit #774691 | Wavlink WL-WN578W2 V221110 Command Injection (Duplicate) (Third Party Advisory, VDB Entry, third-party-advisory)
- cna@vuldb.com (related, Exploit, Third Party Advisory)
- cna@vuldb.com (Exploit, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2026-4543?
- CVE-2026-4543 is a medium-severity vulnerability in Wavlink Wl-wn578w2, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-03-22.
- How severe is CVE-2026-4543?
- Medium severity. CVSS v3 base score is 6.3 out of 10.