Intel

CVE-2026-77545

UniFi: Active Debug Code (CVE-2026-77545)

criticalEPSS 0.4%

Affected

  • Ubiquiti/UniFi = OS..OS

Description

A malicious actor with access to the network, low privileges and under certain conditions could exploit an Active Debug Code vulnerability found in certain devices running UniFi OS to escalate privileges within such UniFi OS devices or instances.

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
9.0
Source: cna-v3
EPSS percentile
31.3 %
Elevated — this CVE ranks above at least 10% of all CVEs scored today.
KEV status
—
Show all metrics
Severity
critical
Priority score
79.91
Exploit maturity
no public PoC known
CVSS v3
9.0
EPSS score
0.4 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-08-26 10:16 UTC
CWE
CWE-489

Weakness classes (CWE)

  • CWE-489Base

    Active Debug Code

    The product is released with debugging code still enabled or active.

    cwe.mitre.org →

References & sources