RCE in Wavlink Wl-Nu516u1
CVE-2026-18587
A flaw has been found in Wavlink WL-NU516U1 708c073-mt7628. The impacted element is an unknown function of the component Config Import. Executing a manipulation of the argument Password can lead to os command injection. The attack may be launched remotely. This attack is characterized by high complexity. The exploitability is regarded as difficult. The exploit has been published and may be used. It is advisable to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.020 (80.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Wavlink Wl-Nu516u1 — versions 708c073-mt7628
Weakness classification (CWE)
References
- vuldb.com/vuln/385415 (technical-description, vdb-entry)
- vuldb.com/vuln/385415/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-18587 (third-party-advisory)
- vuldb.com/submit/850494 (third-party-advisory)
- github.com/oduoke567/WAVLINK-NU516U1-2026-05-1/blob/main/report.md (broken-link)
- dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-07-13-4b8a21f-mt7628-squas… (patch, broken-link)
Frequently asked questions
- What is CVE-2026-18587?
- CVE-2026-18587 is a high-severity vulnerability in Wavlink Wl-Nu516u1, classified under Command Injection. CVSS score: 7.5/10. Published 2026-08-03.
- How severe is CVE-2026-18587?
- High severity. CVSS v3 base score is 7.5 out of 10.