What’s Vulnerable › Vulnerabilities

CVE-2026-18590: Wavlink WL-NU516U1 Admin Password adm.cgi set_sys_adm os command injection

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-03 · updated 2026-10-23
• Weakness: CWE-77

Description

A vulnerability was determined in Wavlink WL-NU516U1 708c073-mt7628. Affected is the function set_sys_adm of the file adm.cgi of the component Admin Password Handler. This manipulation causes os command injection. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized. It is suggested 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.

Affected products

• Wavlink NU516U1: 708c073-mt7628

References

• https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-07-13-4b8a21f-mt7628-squashfs-sysupgrade.bin
• https://github.com/oduoke567/WAVLINK-NU516U1-2026-05-1/blob/main/report2.md
• https://vuldb.com/cve/CVE-2026-18590
• https://vuldb.com/submit/850527
• https://vuldb.com/submit/850560
• https://vuldb.com/vuln/385418
• https://vuldb.com/vuln/385418/cti

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