What is CVE-2018-15720?

CVE-2018-15720 is a critical-severity vulnerability in Logitech Harmony Hub, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2018-12-20.

How severe is CVE-2018-15720?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Logitech Harmony Hub

CVE-2018-15720

Logitech Harmony Hub before version 4.15.206 contained two hard-coded accounts in the XMPP server that gave remote users access to the local API.

Published 2018-12-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.015 (73.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Logitech Harmony Hub
Logitech Harmony Hub Firmware
Logitech Harmony Hub — versions Firmware before 4.15.206

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

www.tenable.com/security/research/tra-2018-47 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-15720?: CVE-2018-15720 is a critical-severity vulnerability in Logitech Harmony Hub, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2018-12-20.
How severe is CVE-2018-15720?: Critical severity. CVSS v3 base score is 9.8 out of 10.