Intel

CVE-2026-77541

UniFi: Improper Access Control (CVE-2026-77541)

criticalEPSS 0.5%

Affected

  • Ubiquiti/UniFi = OS..OS

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.

Source: BSI WID PortalBSI CSAFNVD (NIST)cvelistv5CVE.org (MITRE)

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

UbiquitiUniFi
OS

Metrics

XIEM Effective CVSS
9.1
Source: cna-v3
EPSS percentile
38.1 %
High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
KEV status
—
Show all metrics
Severity
critical
Priority score
84.19
Exploit maturity
no public PoC known
CVSS v3
9.1
EPSS score
0.5 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-08-26 10:16 UTC
CWE
CWE-284

Weakness classes (CWE)

  • CWE-284Pillar

    Improper Access Control

    The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

    cwe.mitre.org →

References & sources