CVE-2026-4543 Details
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.
A command injection vulnerability has been identified in the Wavlink WL-WN578W2 router, specifically in version 221110. The issue arises within the POST request handler of the file '/cgi-bin/firewall.cgi'. By manipulating the 'dmz_flag' or 'del_flag' arguments, remote attackers can inject and execute arbitrary operating system commands. This vulnerability has been made public, and an exploit is available.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 23, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Litengzheng/vul_db/blob/main/WL-WN578W2/vul_4/README.md | [email protected] | ExploitThird Party Advisory |
| https://github.com/Litengzheng/vul_db/blob/main/WL-WN578W2/vul_5/README.md | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/?ctiid.352360 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.352360 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.774690 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.774691 | [email protected] | Third Party AdvisoryVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-74 | Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | [email protected] |
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wavlink wl-wn578w2 firmware | 221110 |
CPE
Remediation
| |
| wavlink wl-wn578w2 | All versions |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 30, 2026 | Initial Analysis | [email protected] |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Mar 22, 2026 | New CVE Received | [email protected] |