CVE-2026-77549
Last modified
CVE-2026-77549 is a critical-severity vulnerability rated 9/10 on the CVSS scale. A malicious actor with access to the network and under certain conditions 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.. EPSS estimates a 0.30% chance of exploitation in the next 30 days.
Description
A malicious actor with access to the network and under certain conditions 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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Ubiquiti Inc | UniFi OS Server | < 5.1.37 |
| Ubiquiti Inc | Cloud Keys | < 5.1.31 |
| Ubiquiti Inc | Network Video Recorders | < 5.1.31 |
| Ubiquiti Inc | Enterprise Network Video Recorders | < 5.1.31 |
| Ubiquiti Inc | Enterprise Network Attached Storage | < 5.1.31 |
| Ubiquiti Inc | Dream Machines | < 5.1.31 |
| Ubiquiti Inc | Enterprise Firewall Core | < 5.1.31 |
| Ubiquiti Inc | Dream Routers | < 5.1.31 |
| Ubiquiti Inc | Enterprise Fortress Gateway | < 5.1.31 |
| Ubiquiti Inc | Cloud Gateways | < 5.1.31 |
| Ubiquiti Inc | Dream Wall | < 5.1.31 |
| Ubiquiti Inc | Express 7 | < 5.1.31 |
| Ubiquiti Inc | Network Attached Storage | < 5.1.32 |
| Ubiquiti Inc | Express | < 4.0.17 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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