CVE-2026-18588

CRITICAL

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.

CVSS v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 8/3/2026Modified: 8/3/2026

Related Intelligence (1)

CRITICALVulnerability

NVD CRITICAL: CVE-2026-18588 — A vulnerability has been found in Wavlink WL-NU516U1 708c073-mt7628. This affect...

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 v

CVE-2026-18588
NIST NVD

References (6)

https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-07-13-4b8a21f-mt7628-squashfs-sysupgrade.binhttps://github.com/oduoke567/WAVLINK-NU516U1-2026-05-1/blob/main/report2.mdhttps://vuldb.com/cve/CVE-2026-18588https://vuldb.com/submit/850500https://vuldb.com/vuln/385416https://vuldb.com/vuln/385416/cti