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CVE-2026-4543

Wavlink WL-WN578W2 POST Request firewall.cgi command injection

Published: Mar 22, 2026Updated: Apr 30, 2026 Sources: CVE List NVDCWE-74
NVD MITRE
6.3CVSSMEDIUM
EPSS Score
3.4%
Top 12.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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 Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-74CWE-77

Affected Products

WL-WN578W2WavlinkNetworking Infrastructure
wl-wn578w2 firmwarewavlinkNetworking Infrastructure
wavlinkcommercialCNNetworking Infrastructureaka wavlink

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://vuldb.com/?id.352360
vuldb.com
https://vuldb.com/?ctiid.352360
vuldb.com
https://vuldb.com/?submit.774690
vuldb.com
and 3 more references View all →

Timeline

Published
Mar 22, 2026
Last Updated
Apr 30, 2026

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