CVE-2026-77557CWE-284broken-access-control

CVE-2026-77557

Critical · published August 26, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
45.1
In the wild
Unconfirmed
What it is

A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi Protect AI Key to escalate privileges on the device.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00548 · 45.1th percentile
Weakness
CWE-284 · Improper Access Control
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 — → 0%
    epss
  • 26 AUG 10:53Z
    A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi Protect AI Key to escalate privileges on the…
    cvelistv5