CVE-2019-25651

High

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.

SeverityHigh
CVSS8.3
Exploit probability—
ProductUniFi Network Controller
PublishedMar 27, 2026
First seenMar 27, 2026
Weakness typeCWE-327CWE-327

How to fix

Update
  • Ubiquiti UniFi Network Controller5.6.42, 5.10.12 or later
  • Ubiquiti UniFi UAP Firmware4.0.6 or later
  • Ubiquiti UniFi UAP-AC Firmware3.8.17 or later
  • Ubiquiti UniFi USW Firmware4.0.6 or later
  • Ubiquiti UniFi USG Firmware4.4.34 or later

Affected products

ProductAffected versionsFixed in
Ubiquiti UniFi Network Controllerv < 5.6.42, 5.6.43 ≤ v < 5.10.125.6.42, 5.10.12
Ubiquiti UniFi UAP Firmwarev < 4.0.64.0.6
Ubiquiti UniFi UAP-AC Firmwarev < 3.8.173.8.17
Ubiquiti UniFi USW Firmwarev < 4.0.64.0.6
Ubiquiti UniFi USG Firmwarev < 4.4.344.4.34

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.