RCE in Wavlink Nu516u1
CVE-2026-8189
A vulnerability was found in Wavlink NU516U1 M16U1_V240425. Affected by this vulnerability is the function wzdrepeater of the file /cgi-bin/adm.cgi. The manipulation of the argument wlan_bssid/sel_Automode/sel_EncrypTyp results in os command injection. It is possible to launch the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.078 (94.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.085 · newest: 0.078 · change: -0.007
Affected products
- Wavlink Nu516u1 — versions M16U1_V240425
- Wavlink Wl-Nu516u1
- Wavlink Wl-Nu516u1 Firmware — versions m16u1_v240425
Weakness classification (CWE)
References
- vuldb.com/vuln/362341 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/362341/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/800728 (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/wudipjq/my_vuln/blob/main/Wavlink/vuln_2/2.md (Exploit, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2026-8189?
- CVE-2026-8189 is a medium-severity vulnerability in Wavlink Nu516u1, classified under Command Injection. CVSS score: 6.3/10. Published 2026-05-09.
- How severe is CVE-2026-8189?
- Medium severity. CVSS v3 base score is 6.3 out of 10.