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 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.

CVSS v3 6.3 MEDIUM
CVSS v2.0 6.5 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

6.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/Litengzheng/vul_db/blob/main/WL-WN578W2/vul_4/README.md	Exploit Third Party Advisory
https://github.com/Litengzheng/vul_db/blob/main/WL-WN578W2/vul_5/README.md	Exploit Third Party Advisory
https://vuldb.com/?ctiid.352360	Permissions Required VDB Entry
https://vuldb.com/?id.352360	Third Party Advisory VDB Entry
https://vuldb.com/?submit.774690	Third Party Advisory VDB Entry
https://vuldb.com/?submit.774691	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:wavlink:wl-wn578w2_firmware:221110:*:*:*:*:*:*:*

cpe:2.3:h:wavlink:wl-wn578w2:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-22 10:16

Updated : 2026-06-17 10:56

NVD link : CVE-2026-4543

Mitre link : CVE-2026-4543

CVE.ORG link : CVE-2026-4543

JSON object : View

Products Affected

wavlink

wl-wn578w2_firmware
wl-wn578w2

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

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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."}, {"lang": "es", "value": "Se encontr\u00f3 una vulnerabilidad en Wavlink WL-WN578W2 221110. El elemento afectado es una funci\u00f3n desconocida del archivo /cgi-bin/firewall.cgi del componente Gestor de Solicitudes POST. La manipulaci\u00f3n del argumento dmz_flag/del_flag resulta en inyecci\u00f3n de comandos. Es posible iniciar el ataque de forma remota. El exploit se ha hecho p\u00fablico y podr\u00eda ser utilizado. El proveedor fue contactado tempranamente sobre esta divulgaci\u00f3n, pero no respondi\u00f3 de ninguna manera."}], "lastModified": "2026-06-17T10:56:47.190", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:wavlink:wl-wn578w2_firmware:221110:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0018E9E0-A56F-4A99-B0F6-9E08A1FC894F"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:wavlink:wl-wn578w2:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "92D9BD84-F88E-4B8A-BB2F-19C5E55D1310"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cna@vuldb.com"}