RCE in Wavlink Nu516u1
CVE-2026-8227
A weakness has been identified in Wavlink NU516U1 240425. This issue affects the function wzdapMesh of the file /cgi-bin/adm.cgi. This manipulation causes os command injection. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. 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: 0.081 (94.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.8% 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: 0.081 · change: -0.004
Affected products
- Wavlink Nu516u1 — versions 240425
- Wavlink Wl-Nu516u1
- Wavlink Wl-Nu516u1 Firmware — versions m16u1_v240425
Weakness classification (CWE)
References
- vuldb.com/vuln/362444 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/362444/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/800732 (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/wudipjq/my_vuln/blob/main/Wavlink/vuln_6/6.md (Exploit, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2026-8227?
- CVE-2026-8227 is a medium-severity vulnerability in Wavlink Nu516u1, classified under Command Injection. CVSS score: 6.3/10. Published 2026-05-10.
- How severe is CVE-2026-8227?
- Medium severity. CVSS v3 base score is 6.3 out of 10.