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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.

PUBLISHED Reserved 2026-03-06 | Published 2026-03-07 | Updated 2026-03-07 | Assigner VulDB




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 4.7CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 4.7CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
5.8AV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Command Injection

Injection

Product status

240425
affected

Timeline

2026-03-06:Advisory disclosed
2026-03-06:VulDB entry created
2026-03-06:VulDB entry last update

Credits

allanp0e (VulDB User) reporter

VulDB coordinator

References

vuldb.com/?id.349550 (VDB-349550 | Wavlink WL-NU516U1 adm.cgi ota_new_upgrade command injection) vdb-entry technical-description

vuldb.com/?ctiid.349550 (VDB-349550 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.758227 (Submit #758227 | wavlink WL-NU516U1-A M16U1_V240425 Command Injection) third-party-advisory

github.com/jinhao118/cve/blob/main/WAVLINK_1.md exploit

cve.org (CVE-2026-3661)

nvd.nist.gov (CVE-2026-3661)

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