9.1

CVE-2026-77541: ubiquiti inc. unifi network application Improper Access Control

CVSS: 9.1v3.1CriticalDeferred
Published 26-08-2026Last modified 26-08-2026
Open JSON

Vulnerability summary

CVE-2026-77541 is a critical (CVSS 9.1) Improper Access Control vulnerability in ubiquiti inc. unifi network application. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 38.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.46%
0%100%
Low · +0.21 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 26-08-2026
    PublishedVulnerability first disclosed.
  2. 26-08-2026
    Last modifiedVulnerability information updated.

Description

A malicious actor with access to the network and high privileges could exploit an Improper Access Control vulnerability found in UniFi Network Application to escalate privileges within the UniFi Network Application.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.46%

Chance of exploitation in the next 30 days

Percentile

39%

Versus all other CVEs

30-day change

+0.21 pp

From 0.26% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.46%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubiquiti inc.1 product

1 vendor · 1 product

References

1 links