Vulnerability · Published Mar 15, 2026 · Assigned by VulDB

CVE-2026-4164Wavlink WL-WN578W2 POST Request wireless.cgi GuestWifi command injection

Critical 9.8

In plain English

A critical-severity command injection in WL-WN578W2 from Wavlink. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)2.1%top 17.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A flaw has been found in Wavlink WL-WN578W2 221110. Impacted is the function Delete_Mac_list/SetName/GuestWifi of the file /cgi-bin/wireless.cgi of the component POST Request Handler. Executing a manipulation can lead to command injection. It is possible to launch the attack remotely. The exploit has been published and may be used. It is recommended to upgrade the affected component.

Affected products (as reported)

Vendor	Product	Versions
Wavlink	WL-WN578W2	221110

Weakness: CWE-77, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

References

VDB-351071 | Wavlink WL-WN578W2 POST Request wireless.cgi GuestWifi command injection vdb-entry, technical-description
VDB-351071 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #768292 | Wavlink WL-WN578W2 V221110 Command Injection third-party-advisory
Submit #768293 | Wavlink WL-WN578W2 V221110 Command Injection (Duplicate) third-party-advisory
Submit #768294 | Wavlink WL-WN578W2 V221110 Command Injection (Duplicate) third-party-advisory
https://github.com/Litengzheng/vul_db/blob/main/WL-WN578W2/vul_1/README.md related
https://github.com/Litengzheng/vul_db/blob/main/WL-WN578W2/vul_2/README.md exploit
https://dl.wavlink.com/firmware/RD/WINSTAR_WN578W2-A-2026-03-10-94f93d4-WO-mt7628-squashfs-sysupgrade.bin patch