CVE-2019-25651
Ubiquiti UniFi Devices Use of AES-CBC Allows Key Recovery and Unauthorized Device Control
- State
- Published
- Severity
- 9.0 Critical
- Published
- Mar 27, 2026
- Updated
- Jul 15, 2026
- Reserved
- Mar 26, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.0 Critical | CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | VulnCheck |
| 3.1 | 8.3 High | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-327 Use of a Broken or Risky Cryptographic Algorithm
Affected Products
| Product | Versions |
|---|---|
UniFi Network ControllerUbiquiti |
|
UniFi UAP FirmwareUbiquiti |
|
UniFi UAP-AC FirmwareUbiquiti |
|
UniFi USW FirmwareUbiquiti |
|
UniFi USG FirmwareUbiquiti |
|
References
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