CVE-2019-25651Ubiquiti UniFi Devices Use of AES-CBC Allows Key Recovery and Unauthorized Device Control
Updated under an hour ago ()
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It affects Ubiquiti UniFi Network Controller and 4 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.3 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-327
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Jul 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Ubiquiti UniFi Network Controller ubiquiti:unifi_network_controller (from the name) | before 5.6.42; from 5.6.43 before 5.10.12 | CNA record |
Ubiquiti UniFi UAP Firmware ubiquiti:unifi_uap_firmware (from the name) | before 4.0.6 | CNA record |
Ubiquiti UniFi UAP-AC Firmware ubiquiti:unifi_uap_ac_firmware (from the name) | before 3.8.17 | CNA record |
Ubiquiti UniFi USW Firmware ubiquiti:unifi_usw_firmware (from the name) | before 4.0.6 | CNA record |
Ubiquiti UniFi USG Firmware ubiquiti:unifi_usg_firmware (from the name) | before 4.4.34 | CNA record |
References
- https://community.ui.com/releases/Security-Advisory-Bulletin-004-004/462e561b-9efd-4c23-bfa7-53d59cc64ecbvendor-advisory
- https://www.vulncheck.com/advisories/ubiquiti-unifi-devices-use-of-aes-cbc-allows-key-recovery-and-unauthorized-device-controlthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.