CVE-2026-4543 — MEDIUM (6.3)

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.

CVSS Score

6.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

LOW

Affected Products

Vendor	Product	Versions
Wavlink	Wl-Wn578W2 Firmware	221110
Wavlink	Wl-Wn578W2	-

Related Weaknesses (CWE)

CWE-74 CWE-77

References

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

FAQ

What is CVE-2026-4543?

CVE-2026-4543 is a vulnerability with a CVSS score of 6.3 (MEDIUM). 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 o...

How severe is CVE-2026-4543?

CVE-2026-4543 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-4543?

Check the references section above for vendor advisories and patch information. Affected products include: Wavlink Wl-Wn578W2 Firmware, Wavlink Wl-Wn578W2.