CVE-2026-18589CWE-119CWE-121

CVE-2026-18589

Critical · published August 3, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
65.3
In the wild
Unconfirmed
What it is

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 remotely. The exploit has been made public and could be used. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01096 · 65.3th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-121 · Stack-based Buffer Overflow
Published
2026-08-03T11:16Z
References (6)
https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-07-13-4b8a21f-mt7628-squashfs-sysupgrade.bin · [email protected]https://github.com/oduoke567/WAVLINK-NU516U1-2026-05-1/blob/main/report2.md · [email protected]https://vuldb.com/cve/CVE-2026-18589 · [email protected]https://vuldb.com/submit/850501 · [email protected]https://vuldb.com/vuln/385417 · [email protected]https://vuldb.com/vuln/385417/cti · [email protected]
EPSS history
Timeline
  • 03 AUG 06:30Z
    Wavlink WL-NU516U1 nas.cgi change_password stack-based overflow
    cvelistv5