CVE-2026-77549 (GCVE-0-2026-77549)

Vulnerability from cvelistv5 – Published: 2026-08-26 10:30 – Updated: 2026-08-27 03:56
VLAI
Summary
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.
Severity
9 (Critical)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 00:00 UTC
CWE
  • CWE-93 - Improper neutralization of CRLF sequences ('CRLF injection')
Assigner
References
Impacted products
Vendor Product Version CPE status
Ubiquiti Inc UniFi OS Server Affected: 0 , < 5.1.37 (semver)
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Ubiquiti Inc Cloud Keys Affected: 0 , < 5.1.31 (semver)
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Ubiquiti Inc Network Video Recorders Affected: 0 , < 5.1.31 (semver)
guessed Create a notification for this product.
Ubiquiti Inc Enterprise Network Video Recorders Affected: 0 , < 5.1.31 (semver)
guessed Create a notification for this product.
Ubiquiti Inc Enterprise Network Attached Storage Affected: 0 , < 5.1.31 (semver)
guessed Create a notification for this product.
Ubiquiti Inc Dream Machines Affected: 0 , < 5.1.31 (semver)
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Ubiquiti Inc Enterprise Firewall Core Affected: 0 , < 5.1.31 (semver)
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Ubiquiti Inc Dream Routers Affected: 0 , < 5.1.31 (semver)
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Ubiquiti Inc Enterprise Fortress Gateway Affected: 0 , < 5.1.31 (semver)
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Ubiquiti Inc Cloud Gateways Affected: 0 , < 5.1.31 (semver)
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Ubiquiti Inc Dream Wall Affected: 0 , < 5.1.31 (semver)
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Ubiquiti Inc Express 7 Affected: 0 , < 5.1.31 (semver)
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Ubiquiti Inc Network Attached Storage Affected: 0 , < 5.1.32 (semver)
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Ubiquiti Inc Express Affected: 0 , < 4.0.17 (semver)
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