RCE in Wavlink Wl-Wn579a3
CVE-2026-4163
A vulnerability was detected in Wavlink WL-WN579A3 220323. This issue affects the function SetName/GuestWifi of the file /cgi-bin/wireless.cgi of the component POST Request Handler. Performing a manipulation results in command injection. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading the affected component is recommended.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.036 (89.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.036 · change: +0.015
Affected products
- Wavlink Wl-Wn579a3 — versions 220323
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- vuldb.com/ (third-party-advisory)
- github.com/Litengzheng/vul_db/blob/main/WL-WN579A3/vul_9/README.md (related)
- github.com/Litengzheng/vul_db/blob/main/WL-WN579A3/vul_10/README.md (exploit)
- dl.wavlink.com/firmware/RD/WINSTAR_WN579A3-A-2026-03-10-94f93d4-WO-mt7628-squas… (patch)
Frequently asked questions
- What is CVE-2026-4163?
- CVE-2026-4163 is a critical-severity vulnerability in Wavlink Wl-Wn579a3, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2026-03-16.
- How severe is CVE-2026-4163?
- Critical severity. CVSS v3 base score is 9.8 out of 10.