PT-2026-67146 · Wavlink · Wl-Nu516U1

Oduoke · CVE-2026-18588 · Published 2026-08-03 · Updated 2026-08-03

Mitre

CVSS v3.1

9.8

Critical

Base vector

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

A vulnerability has been found in Wavlink WL-NU516U1 708c073-mt7628. This affects the function fgets of the file nas.cgi. The manipulation of the argument CONTENT LENGTH leads to stack-based buffer overflow. Remote exploitation of the attack is possible. You should upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

Fix

Stack Overflow

Buffer Overflow

Weakness Enumeration

CWE-121

CWE-119

Related Identifiers

CVE-2026-18588

Affected Products

Wl-Nu516U1

References · 7

• https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-07-13-4b8a21f-mt7628-squashfs-sysupgrade.bin · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-18588 · Security Note
• https://vuldb.com/vuln/385416/cti · Note
• https://vuldb.com/vuln/385416 · Note
• https://vuldb.com/submit/850500 · Note
• ❌ https://github.com/oduoke567/WAVLINK-NU516U1-2026-05-1/blob/main/report2.md · Note, Deleted
• https://vuldb.com/cve/CVE-2026-18588 · Note