Vulnerability in Ubiquiti Inc Cloud Gateways
CVE-2026-55110
A malicious actor who lures an authenticated user to a malicious page could exploit a Cross-Origin Resource Sharing (CORS) misconfiguration found in UniFi OS to trigger actions in UniFi OS using that user's session.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (17.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Ubiquiti Inc Cloud Gateways — versions 0
- Ubiquiti Inc Cloud Keys — versions 0
- Ubiquiti Inc Dream Machines — versions 0
- Ubiquiti Inc Dream Routers — versions 0
- Ubiquiti Inc Dream Wall — versions 0
- Ubiquiti Inc Enterprise Firewall Core — versions 0
- Ubiquiti Inc Enterprise Fortress Gateway — versions 0
- Ubiquiti Inc Enterprise Video Recorders — versions 0
- Ubiquiti Inc Express 7 — versions 0
- Ubiquiti Inc Network Attached Storage — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-55110?
- CVE-2026-55110 is a high-severity vulnerability in Ubiquiti Inc Cloud Gateways, classified under Permissive Cross-domain Policy with Untrusted Domains. CVSS score: 7.5/10. Published 2026-07-02.
- How severe is CVE-2026-55110?
- High severity. CVSS v3 base score is 7.5 out of 10.