An Improper Input Validation in certain UniFi Access devices could allow a Command Injection by a malicious actor with access to UniFi Access management network.

Affected Products:
UniFi Access Reader Pro (Version 2.14.21 and earlier)
UniFi Access G2 Reader Pro (Version 1.10.32 and earlier)
UniFi Access G3 Reader Pro (Version 1.10.30 and earlier)
UniFi Access Intercom (Version 1.7.28 and earlier)
UniFi Access G3 Intercom (Version 1.7.29 and earlier)
UniFi Access Intercom Viewer (Version 1.3.20 and earlier)

Mitigation:
Update UniFi Access Reader Pro Version 2.15.9 or later
Update UniFi Access G2 Reader Pro Version 1.11.23 or later
Update UniFi Access G3 Reader Pro Version 1.11.22 or later
Update UniFi Access Intercom Version 1.8.22 or later
Update UniFi Access G3 Intercom Version 1.8.22 or later
Update UniFi Access Intercom Viewer Version 1.4.39 or later

References

• https://nvd.nist.gov/vuln/detail/CVE-2025-27212
• https://community.ui.com/releases/Security-Advisory-Bulletin-051-051/583fa6e1-3d85-42ec-a453-651d1653c9b3