CVE-2026-4543

MEDIUM 6.3

Wavlink WL-WN578W2 POST Request firewall.cgi command injection

CVSS Score

6.3

EPSS Score

0.2%

EPSS Percentile

39th

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.

CWE	CWE-77 CWE-74
Vendor	wavlink
Product	wl-wn578w2
Published	Mar 22, 2026
Last Updated	Mar 23, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Wavlink / WL-WN578W2

221110

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/?id.352360 vuldb.com: https://vuldb.com/?ctiid.352360 vuldb.com: https://vuldb.com/?submit.774690 vuldb.com: https://vuldb.com/?submit.774691 github.com: https://github.com/Litengzheng/vul_db/blob/main/WL-WN578W2/vul_4/README.md github.com: https://github.com/Litengzheng/vul_db/blob/main/WL-WN578W2/vul_5/README.md

Credits

🔍 LtzHuster (VulDB User) VulDB