CVE-2026-2567CWE-119CWE-121

Wavlink WL-NU516U1 nas.cgi sub_401218 stack-based overflow

High · published February 16, 2026

CVSS v4.0
8.6
EPSS
1%
Percentile
69.2
In the wild
Unconfirmed
What it is

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 attack may be initiated remotely. The exploit is now public and may be used.

The record
Technical detail
CVSS v4.0
8.6 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
EPSS
0.01251 · 69.2th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-121 · Stack-based Buffer Overflow
Published
2026-02-16T17:32Z
EPSS history
Timeline
  • 16 FEB 17:32Z
    Wavlink WL-NU516U1 nas.cgi sub_401218 stack-based overflow
    cvelistv5