What is CVE-2026-2567?

CVE-2026-2567 is a high-severity vulnerability in Wavlink Wl-nu516u1, classified under Stack-based Buffer Overflow. CVSS score: 7.2/10. Published 2026-02-16.

How severe is CVE-2026-2567?

High severity. CVSS v3 base score is 7.2 out of 10.

Buffer overflow in Wavlink Wl-nu516u1

CVE-2026-2567

A vulnerability was detected in Wavlink WL-NU516U1 20251208. This vulnerability affects the function sub_401218 of the file /cgi-bin/nas.cgi. Performing a manipulation of the argument User1Passwd results in stack-based buffer overflow. The…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (34.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R.

Affected products

Wavlink Wl-nu516u1 — versions 20251208

Weakness classification (CWE)

References

VDB-346174 | Wavlink WL-NU516U1 nas.cgi sub_401218 stack-based overflow (vdb-entry, technical-description)
VDB-346174 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
Submit #752016 | Wavlink NU516U1 V251208 Stack-based Buffer Overflow (third-party-advisory)
github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/nas.cgi_User1Passwd.md (exploit)

Frequently asked questions

What is CVE-2026-2567?: CVE-2026-2567 is a high-severity vulnerability in Wavlink Wl-nu516u1, classified under Stack-based Buffer Overflow. CVSS score: 7.2/10. Published 2026-02-16.
How severe is CVE-2026-2567?: High severity. CVSS v3 base score is 7.2 out of 10.