CVEs / CVE-2026-3661
CVE-2026-3661: Wavlink WL-NU516U1 vulnerability
- high 7.2 CVSS 3.1 (NVD)
- EPSS 19.7% chance of exploitation in the next 30 days, higher than 97% of CVEs (2 Nov 2026)
- Last changed at its sources
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Description
A flaw has been found in Wavlink WL-NU516U1 240425. This affects the function ota_new_upgrade of the file /cgi-bin/adm.cgi. This manipulation of the argument model causes command injection. It is possible to initiate the attack remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Wavlink WL-NU516U1 | 240425 | — |
Exploitation
Not in the CISA Known Exploited Vulnerabilities catalog as of 30 Oct 2026.
Severity
| CVSS 3.1 | 7.2 highCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-74, CWE-77 |
References
- CVE-2026-3661 on NVD
- https://github.com/jinhao118/cve/blob/main/WAVLINK_1.md Exploit, Third Party Advisory
- https://vuldb.com/?ctiid.349550 Permissions Required, VDB Entry
- https://vuldb.com/?id.349550 Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.758227 Third Party Advisory, VDB Entry
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.