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Vulnerability record · CVE-2026-22559 · published 24 March 2026

CVE-2026-22559: Improper input validation vulnerability

An Improper Input Validation vulnerability in UniFi Network Server may allow unauthorized access to an account if the account owner is socially engineered into clicking a malicious link. Affected Products: UniFi Network Server (Version 10.1.85 and earlier) Mitigation: Update UniFi Network Server to Version 10.1.89 or later.

8.8 CVSS 3.1 High EPSS 0.36% · top 73.0% CWE-20 · Improper input validation Deferred
8.8CVSS 3.1 base score
0.36%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

An Improper Input Validation vulnerability in UniFi Network Server may allow unauthorized access to an account if the account owner is socially engineered into clicking a malicious link. Affected Products: UniFi Network Server (Version 10.1.85 and earlier) Mitigation: Update UniFi Network Server to Version 10.1.89 or later.

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

References

LinkTags
https://community.ui.com/releases/Security-Advisory-Bulletin-062-062/c29719c0-405e-4d4a-8f26-e343e99f931b

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Source: NIST National Vulnerability Database (record CVE-2026-22559), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.