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Vulnerability record · CVE-2026-77547 · published 26 August 2026

CVE-2026-77547: Improper input validation vulnerability

A malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in UniFi Access Application to execute a Command Injection on the host device.

9.9 CVSS 3.1 Critical EPSS 1.4% · top 27.8% CWE-20 · Improper input validation Deferred
9.9CVSS 3.1 base score
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
28 Aug 2026Last modified by NVD

Description

A malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in UniFi Access Application to execute a Command Injection on the host device.

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

References

LinkTags
https://community.ui.com/releases/Security-Advisory-Bulletin-067/fc4a3488-7c43-4628-8bab-f715e96dbfc9

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-77547), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.