CVE-2026-77550
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.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 10
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS probability
- 0.49%
- CWE
- CWE-93
- Published
- 2026-08-26
- Last modified
- 2026-08-27
Affected products
- Ubiquiti Inc UniFi OS Server
- Ubiquiti Inc Cloud Keys
- Ubiquiti Inc Network Video Recorders
- Ubiquiti Inc Enterprise Network Video Recorders
- Ubiquiti Inc Enterprise Network Attached Storage
- Ubiquiti Inc Dream Machines
- Ubiquiti Inc Enterprise Firewall Core
- Ubiquiti Inc Dream Routers
Weakness type
Related vulnerabilities
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- CVE-2026-84962 — Authenticated KMS request forgery via CRLF injection in GCP key identifier strings
- CVE-2026-84379 — HTTPX2: Multipart part header injection via unvalidated file Content-Type and custom headers
- CVE-2026-84372 — Predis: Redis command injection and denial of service via CRLF smuggling in pipelined commands on aggregate connections
- CVE-2026-82854 — Nodemailer before 8.0.3 SMTP Command Injection via envelope.size
- CVE-2026-82853 — Nodemailer before 8.0.5 SMTP Command Injection via CRLF
- CVE-2026-82661 — Nodemailer CRLF Injection via List-* Header Comments