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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.

PUBLISHED Reserved 2026-03-21 | Published 2026-03-22 | Updated 2026-03-23 | Assigner VulDB




MEDIUM: 5.3CVSS: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
MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Command Injection

Injection

Product status

221110
affected

Timeline

2026-03-21:Advisory disclosed
2026-03-21:VulDB entry created
2026-03-21:VulDB entry last update

Credits

LtzHuster (VulDB User) reporter

VulDB coordinator

References

vuldb.com/?id.352360 (VDB-352360 | Wavlink WL-WN578W2 POST Request firewall.cgi command injection) vdb-entry technical-description

vuldb.com/?ctiid.352360 (VDB-352360 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.774690 (Submit #774690 | Wavlink WL-WN578W2 V221110 Command Injection) third-party-advisory

vuldb.com/?submit.774691 (Submit #774691 | Wavlink WL-WN578W2 V221110 Command Injection (Duplicate)) third-party-advisory

github.com/...ng/vul_db/blob/main/WL-WN578W2/vul_4/README.md related

github.com/...ng/vul_db/blob/main/WL-WN578W2/vul_5/README.md exploit

cve.org (CVE-2026-4543)

nvd.nist.gov (CVE-2026-4543)

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