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CVE-2026-3703

CRITICAL

9.8

Description

A flaw has been found in Wavlink NU516U1 251208. This affects the function sub_401A10 of the file /cgi-bin/login.cgi. Executing a manipulation of the argument ipaddr can lead to out-of-bounds write. The attack may be performed from remote. The exploit has been published and may be used. Upgrading the affected component is recommended. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/8/2026

Last Modified3/10/2026

Sourcenvd

Honeypot Sightings0

Affected Products

wavlink:wl-nu516u1wavlink:wl-nu516u1_firmware

Weaknesses (CWE)

CWE-119CWE-787

References

https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-02-27-2fcf6ae-mt7628-squashfs-sysupgrade.bin(cna@vuldb.com)

https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/ipaddr.md(cna@vuldb.com)

https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/ipaddr.md#exp-exploit--poc(cna@vuldb.com)

https://vuldb.com/?ctiid.349649(cna@vuldb.com)

https://vuldb.com/?id.349649(cna@vuldb.com)

https://vuldb.com/?submit.759226(cna@vuldb.com)

IOC Correlations

No correlations recorded

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