CVE-2019-25651
Ubiquiti UniFi Devices Use of AES-CBC Allows Key Recovery and Unauthorized Device Control
CVSS Score
8.3
EPSS Score
0.0%
EPSS Percentile
1th
Ubiquiti UniFi Network Controller prior to 5.10.12 (excluding 5.6.42), UAP FW prior to 4.0.6, UAP-AC, UAP-AC v2, and UAP-AC Outdoor FW prior to 3.8.17, USW FW prior to 4.0.6, USG FW prior to 4.4.34 uses AES-CBC encryption for device-to-controller communication, which contains cryptographic weaknesses that allow attackers to recover encryption keys from captured traffic. Attackers with adjacent network access can capture sufficient encrypted traffic and exploit AES-CBC mode vulnerabilities to derive the encryption keys, enabling unauthorized control and management of network devices.
| CWE | CWE-327 |
| Vendor | ubiquiti |
| Product | unifi network controller |
| Published | Mar 27, 2026 |
| Last Updated | Mar 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H Attack Vector
Adjacent
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Ubiquiti / UniFi Network Controller
0 < 5.10.12
Ubiquiti / UniFi UAP Firmware
0 < 4.0.6
Ubiquiti / UniFi UAP-AC Firmware
0 < 3.8.17
Ubiquiti / UniFi USW Firmware
0 < 4.0.6
Ubiquiti / UniFi USG Firmware
0 < 4.4.34