CVE-2026-34908

Ubiquiti UniFi OS Improper Access Control Vulnerability

Severity: critical
CVSS v3: 10
EPSS percentile: 100%
Known exploited: yes (CISA KEV)
Vendor: Ubiquiti
Product: UniFi OS
Published: 2026-06-23
Modified: 2026-07-23

Description

A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi OS devices to make unauthorized changes to the system.

NVD record

Informational only. Not a warranty of security, completeness or fitness for any purpose. Derived from NVD, CISA KEV, FIRST.org EPSS and vendor advisories (CVE Program List v5); those sources change continuously and may be incomplete or incorrect. Verify every remediation against the vendor advisory before acting. Absence of a finding is not evidence that no vulnerability exists. Not endorsed by NVD, CISA, FIRST or any vendor named.

Raw record

{
  "id": "CVE-2026-34908",
  "title": "Ubiquiti UniFi OS Improper Access Control Vulnerability",
  "description": "A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi OS devices to make unauthorized changes to the system.",
  "severity": "critical",
  "cvss": 10,
  "epss": 100,
  "kev": 1,
  "vendor": "Ubiquiti",
  "product": "UniFi OS",
  "published": "2026-06-23",
  "modified": "2026-07-23T16:10:00.137",
  "source": "nvd",
  "remediation": [],
  "disclaimer": "Informational only. Not a warranty of security, completeness or fitness for any purpose. Derived from NVD, CISA KEV, FIRST.org EPSS and vendor advisories (CVE Program List v5); those sources change continuously and may be incomplete or incorrect. Verify every remediation against the vendor advisory before acting. Absence of a finding is not evidence that no vulnerability exists. Not endorsed by NVD, CISA, FIRST or any vendor named."
}