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Critical 10.0Published Aug 26, 2026
CVE-2026-77550A malicious actor with access to the network could exploit an Improper Neutralization of CRLF Sequences vulnerability found in certain devices running UniFi OS to bypass authentication to such UniFi…
Updated under an hour ago ()
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It affects Ubiquiti Inc UniFi OS Server and 13 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A malicious actor with access to the network could exploit an Improper Neutralization of CRLF Sequences vulnerability found in certain devices running UniFi OS to bypass authentication to such UniFi OS devices or instances.
- CVSS
- 10.0 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-93
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Ubiquiti
- NVD analysis
- Deferred
- Record last updated
- Aug 27, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Ubiquiti Inc UniFi OS Server ubiquiti:unifi_os_server (from the name) | before 5.1.37 | CNA record |
Ubiquiti Inc Cloud Keys ubiquiti:cloud_keys (from the name) | before 5.1.31 | CNA record |
Ubiquiti Inc Network Video Recorders ubiquiti:network_video_recorders (from the name) | before 5.1.31 | CNA record |
Ubiquiti Inc Enterprise Network Video Recorders ubiquiti:enterprise_network_video_recorders (from the name) | before 5.1.31 | CNA record |
Ubiquiti Inc Enterprise Network Attached Storage ubiquiti:enterprise_network_attached_storage (from the name) | before 5.1.31 | CNA record |
Ubiquiti Inc Dream Machines ubiquiti:dream_machines (from the name) | before 5.1.31 | CNA record |
Ubiquiti Inc Enterprise Firewall Core ubiquiti:enterprise_firewall_core (from the name) | before 5.1.31 | CNA record |
Ubiquiti Inc Dream Routers ubiquiti:dream_routers (from the name) | before 5.1.31 | CNA record |
Ubiquiti Inc Enterprise Fortress Gateway ubiquiti:enterprise_fortress_gateway (from the name) | before 5.1.31 | CNA record |
Ubiquiti Inc Cloud Gateways ubiquiti:cloud_gateways (from the name) | before 5.1.31 | CNA record |
Ubiquiti Inc Dream Wall ubiquiti:dream_wall (from the name) | before 5.1.31 | CNA record |
Ubiquiti Inc Express 7 ubiquiti:express_7 (from the name) | before 5.1.31 | CNA record |
Ubiquiti Inc Network Attached Storage ubiquiti:network_attached_storage (from the name) | before 5.1.32 | CNA record |
Ubiquiti Inc Express ubiquiti:express (from the name) | before 4.0.17 | CNA record |
References
- https://community.ui.com/releases/Security-Advisory-Bulletin-067/fc4a3488-7c43-4628-8bab-f715e96dbfc9
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.