CVE-2019-10121

CRITICAL

eQ-3 HomeMatic CCU2 <2.41.8 & CCU3 <3.43.15 - Auth Bypass

Title source: llm
STIX 2.1

Description

eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.15 use session IDs for authentication but lack authorization checks. An attacker can obtain a session ID via the user authentication dialogue, aka HMCCU-153. This leads to automatic login as admin.

References (3)

Core 3

Scores

CVSS v3 9.8
EPSS 0.0463
EPSS Percentile 90.5%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-306
Status published
Products (2)
eq-3/ccu2_firmware < 2.41.8
eq-3/ccu3_firmware < 3.43.15
Published Jul 10, 2019
Tracked Since Feb 18, 2026