Buffer overflow in Wavlink Wl-nu516u1
CVE-2026-2565
A weakness has been identified in Wavlink WL-NU516U1 20251208. Affected by this issue is the function sub_40785C of the file /cgi-bin/adm.cgi. This manipulation of the argument time_zone causes stack-based buffer overflow. The attack can b…
Vulnerability class: Buffer Overflow
EPSS: 0.008 (50.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Wavlink Wl-nu516u1 — versions 20251208
- Wavlink Wl-nu516u1_firmware
Weakness classification (CWE)
References
- cna@vuldb.com (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- cna@vuldb.com (signature, Permissions Required, permissions-required, VDB Entry)
- cna@vuldb.com (VDB Entry, Third Party Advisory, third-party-advisory)
- cna@vuldb.com (Exploit, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2026-2565?
- CVE-2026-2565 is a medium-severity vulnerability in Wavlink Wl-nu516u1, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.6/10. Published 2026-02-16.
- How severe is CVE-2026-2565?
- Medium severity. CVSS v3 base score is 6.6 out of 10.