Buffer overflow in Wavlink Wl-nu516u1
CVE-2026-18589
A vulnerability was found in Wavlink WL-NU516U1 708c073-mt7628. This impacts the function change_password of the file nas.cgi. The manipulation of the argument User1Passwd results in stack-based buffer overflow. The attack can be executed…
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Wavlink Wl-nu516u1 — versions 708c073-mt7628
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (broken-link)
- cna@vuldb.com (patch, broken-link)
Frequently asked questions
- What is CVE-2026-18589?
- CVE-2026-18589 is a critical-severity vulnerability in Wavlink Wl-nu516u1, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2026-08-03.
- How severe is CVE-2026-18589?
- Critical severity. CVSS v3 base score is 9.8 out of 10.