Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%

Buy Us a Coffee

CVE-2026-4543— Wavlink WL-WN578W2 POST Request firewall.cgi command injection

Quick assessment

Affected

Wavlink WL-WN578W2

Exploitation

High exploitation probability; assess promptly

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Wavlink WL-WN578W2是中国睿因（Wavlink）公司的一款无线中继器。 Wavlink WL-WN578W2 221110版本存在命令注入漏洞，该漏洞源于对POST请求处理组件中文件/cgi-bin/firewall.cgi的参数dmz_flag/del_flag的错误操作，可能导致命令注入。

CVSS 6.3 · Medium EPSS 4.89% · P92 Updated Mar 24, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-4543

Vulnerability Information

Have questions about the vulnerability? See if Shenlong's analysis helps!

View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title

Wavlink WL-WN578W2 POST Request firewall.cgi command injection

Source: CVE Program / CVE List V5

Vulnerability 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.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

在命令中使用的特殊元素转义处理不恰当(命令注入)

Source: CVE Program / CVE List V5

Vulnerability Title

Wavlink WL-WN578W2 命令注入漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Wavlink	WL-WN578W2	221110	`cpe:2.3:o:wavlink:wl-wn578w2_firmware::::::::`

II. Public POCs for CVE-2026-4543

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-4543

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-4543 (4)

vul_db/WL-WN578W2/vul_4/README.md at main · Litengzheng/vul_db · GitHub related
Submit #774690: Wavlink WL-WN578W2 V221110 Command Injection third-party-advisory
Submit #774691: Wavlink WL-WN578W2 V221110 Command Injection third-party-advisory
CVE-2026-4543 Wavlink WL-WN578W2 POST Request firewall.cgi command injection vdb-entry technical-description

Other References for CVE-2026-4543 (1)

vul_db/WL-WN578W2/vul_5/README.md at main · Litengzheng/vul_db · GitHub exploit

https://www.cve.org/CVERecord?id=CVE-2026-4543

IV. Related Vulnerabilities

Same product: WL-WN578W2

Same vendor: Wavlink

Same weakness: CWE-77

V. Comments for CVE-2026-4543

No comments yet

Goal Reached Thanks to every supporter — we hit 100%!

CVE-2026-4543— Wavlink WL-WN578W2 POST Request firewall.cgi command injection

Quick assessment

Possible ATT&CK Techniques 1 AI

I. Basic Information for CVE-2026-4543

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2026-4543

III. Intelligence Information for CVE-2026-4543

Vendor Advisories for CVE-2026-4543 (4)

Other References for CVE-2026-4543 (1)

IV. Related Vulnerabilities

V. Comments for CVE-2026-4543

Leave a comment