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CVE-2026-18590

Wavlink WL-NU516U1 Admin Password adm.cgi set_sys_adm os command injection

MEDIUM
6.3
CVSS Score
Published: August 3, 2026 at 06:45 AM UTC
Updated: October 23, 2026 at 10:10 PM UTC
2 products affected across 1 vendorWl NU516U1 FirmwareWL-NU516U1

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Severity
MEDIUM6.3
Exploit prediction
EPSS 2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (7)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/385418
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/385418/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-18590
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/850527
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/850560
Broken Link
Source: cverecord
https://github.com/oduoke567/WAVLINK-NU516U1-2026-05-1/blob/main/report2.md
Broken LinkPatch
Source: cverecord
https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-07-13-4b8a21f-mt7628-squashfs-sysupgrade.bin

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-78CWE-77

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