CVE-2026-55110
7.5 · HIGHOverview
CVE-2026-55110 is a high-severity vulnerability affecting ui unifi_os_server. It was published on July 2, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from ui. Update unifi_os_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| ui | unifi_os_server | 0 | Affected |
| ui | unifi_dream_machine_beast_firmware | 0 | Affected |
| ui | unifi_dream_machine_pro_firmware | 0 | Affected |
| ui | unifi_dream_machine_special_edition_firmware | 0 | Affected |
| ui | unifi_dream_machine_pro_max_firmware | 0 | Affected |
| ui | enterprise_fortress_gateway_firmware | 0 | Affected |
| ui | unifi_dream_router_firmware | 0 | Affected |
| ui | unifi_dream_wall_firmware | 0 | Affected |
| ui | unifi_dream_router_7_firmware | 0 | Affected |
| ui | unifi_express_7_firmware | 0 | Affected |
| ui | unifi_cloudkey_firmware | 0 | Affected |
Frequently Asked Questions
What is CVE-2026-55110?
CVE-2026-55110 is a high-severity vulnerability affecting ui unifi_os_server. It was published on July 2, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-55110?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-55110?
Check the references section for vendor advisories and patches from ui. Update unifi_os_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-55110?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-55110 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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Browser-based exploitation validates findings with real proof-of-concept.
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