RCE in Wavlink Wl-Wn530h4
CVE-2026-6483
A vulnerability was found in Wavlink WL-WN530H4 20220721. This vulnerability affects the function strcat/snprintf of the file /cgi-bin/internet.cgi. The manipulation results in os command injection. It is possible to launch the attack remotely. The exploit has been made public and could be used. Upgrading to version 2026.04.16 is able to resolve this issue. Upgrading the affected component is recommended.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.032 (87.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.141 · newest: 0.032 · change: -0.110
Affected products
- Wavlink Wl-Wn530h4 — versions 20220721, 2026.04.16
Weakness classification (CWE)
References
- vuldb.com/vuln/358021 (technical-description, vdb-entry)
- vuldb.com/vuln/358021/cti (signature, permissions-required)
- vuldb.com/submit/783055 (third-party-advisory)
- github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/ma… (exploit)
- dl.wavlink.com/firmware/RD/root_uImage_WN530H4-A_2026.04.16.bin (patch)
Frequently asked questions
- What is CVE-2026-6483?
- CVE-2026-6483 is a high-severity vulnerability in Wavlink Wl-Wn530h4, classified under Command Injection. CVSS score: 7.2/10. Published 2026-04-17.
- How severe is CVE-2026-6483?
- High severity. CVSS v3 base score is 7.2 out of 10.