CVE-2026-77547CWE-20

CVE-2026-77547

Critical · published August 26, 2026

CVSS v3.1
9.9
EPSS
1%
Percentile
73.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.9 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01444 · 73.1th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2026-08-26T15:16Z
References (1)
https://community.ui.com/releases/Security-Advisory-Bulletin-067/fc4a3488-7c43-4628-8bab-f715e96dbfc9 · fe490ce8-0395-4072-90d8-2707e1bdf984
EPSS history
Timeline
  • 28 AUG 06:53Z
    EPSS moved — → 1%
    epss
  • 26 AUG 10:20Z
    A malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in UniFi Access Application to…
    cvelistv5