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Vulnerability record · CVE-2026-4543 · published 22 March 2026

CVE-2026-4543: Wavlink wl-wn578w2 firmware injection vulnerability

Wavlink · Wl Wn578w2 Firmware

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.

2.1 CVSS 4.0 Low EPSS 4.9% · top 8.2% CWE-74 · InjectionCWE-77 · Command injection
2.1CVSS 4.0 base score, v2 6.5
4.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/Litengzheng/vul_db/blob/main/WL-WN578W2/vul_4/README.md ExploitThird Party Advisory
https://github.com/Litengzheng/vul_db/blob/main/WL-WN578W2/vul_5/README.md ExploitThird Party Advisory
https://vuldb.com/?ctiid.352360 Permissions RequiredVDB Entry
https://vuldb.com/?id.352360 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.774690 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.774691 Third Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

5.5CVE-2025-10359Wavlink wl-wn578w2 firmware command injection vulnerabilityA vulnerability was detected in Wavlink WL-WN578W2 221110. This impacts the function sub_404DBC of the file /cgi-bin/wireless.cgi. The manipulation o…EPSS 6.1%5.5CVE-2025-10358Wavlink wl-wn578w2 firmware command injection vulnerabilityA security vulnerability has been detected in Wavlink WL-WN578W2 221110. This affects the function sub_404850 of the file /cgi-bin/wireless.cgi. The …EPSS 6.1%5.5CVE-2025-10324Wavlink wl-wn578w2 firmware injection vulnerabilityA vulnerability was determined in Wavlink WL-WN578W2 221110. This affects the function sub_401C5C of the file firewall.cgi. This manipulation of the …EPSS 8.1%5.5CVE-2025-10323Wavlink wl-wn578w2 firmware injection vulnerabilityA vulnerability was found in Wavlink WL-WN578W2 221110. The impacted element is the function sub_409184 of the file /wizard_rep.shtml. The manipulati…EPSS 8.1%5.5CVE-2025-10321Wavlink wl-wn578w2 firmware information exposure vulnerabilityA flaw has been found in Wavlink WL-WN578W2 221110. Impacted is an unknown function of the file /live_online.shtml. Executing manipulation can lead t…EPSS 0.53%5.5CVE-2025-10322Wavlink wl-wn578w2 firmware weak password recovery vulnerabilityA vulnerability has been found in Wavlink WL-WN578W2 221110. The affected element is an unknown function of the file /sysinit.html. The manipulation …EPSS 0.48%2.1CVE-2025-10325Wavlink wl-wn578w2 firmware injection vulnerabilityA vulnerability was identified in Wavlink WL-WN578W2 221110. This impacts the function sub_401340/sub_401BA4 of the file /cgi-bin/login.cgi. Such man…EPSS 6.8%1.9CVE-2026-4544Wavlink wl-wn578w2 firmware cross-site scripting vulnerabilityA vulnerability was determined in Wavlink WL-WN578W2 221110. This affects an unknown function of the file /cgi-bin/login.cgi of the component POST Re…EPSS 0.42%

Source: NIST National Vulnerability Database (record CVE-2026-4543), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.