CVE-2018-15721: Logitech Harmony Hub Firmware

Critical severity, CVSS 9.8. EPSS: 1.8% chance of exploitation in the next 30 days.

The XMPP server in Logitech Harmony Hub before version 4.15.206 is vulnerable to authentication bypass via a crafted XMPP request. Remote attackers can use this vulnerability to gain access to the local API.

Affected products

• Logitech Harmony Hub Firmware: before 4.15.206 (fixed in 4.15.206)

Published 2018-12-20. Last modified 2026-06-17.