CVE-2026-18590

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.

CVSS 4.0

2.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

CVSS 3.1

6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS

1.8% chance of exploitation in the next 30 days; higher than 78% of CVEs (scores of 2026-10-25)

CWEs

CWE-77, CWE-78

Published

2026-08-03

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

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

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