CVE-2026-3661 — MEDIUM (4.7)

Vulnerability Description

A flaw has been found in Wavlink WL-NU516U1 240425. This affects the function ota_new_upgrade of the file /cgi-bin/adm.cgi. This manipulation of the argument model causes command injection. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure.

CVSS Score

4.7

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

LOW

Affected Products

Vendor	Product	Versions
Wavlink	Wl-Nu516U1 Firmware	m16u1_v240425
Wavlink	Wl-Nu516U1	-

Related Weaknesses (CWE)

CWE-74 CWE-77

References

https://github.com/jinhao118/cve/blob/main/WAVLINK_1.mdExploitThird Party Advisory
https://vuldb.com/?ctiid.349550Permissions RequiredVDB Entry
https://vuldb.com/?id.349550Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.758227Third Party AdvisoryVDB Entry

FAQ

What is CVE-2026-3661?

CVE-2026-3661 is a vulnerability with a CVSS score of 4.7 (MEDIUM). A flaw has been found in Wavlink WL-NU516U1 240425. This affects the function ota_new_upgrade of the file /cgi-bin/adm.cgi. This manipulation of the argument model causes command injection. It is poss...

How severe is CVE-2026-3661?

CVE-2026-3661 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-3661?

Check the references section above for vendor advisories and patch information. Affected products include: Wavlink Wl-Nu516U1 Firmware, Wavlink Wl-Nu516U1.