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CVE-2021-33032

eQ-3 HomeMatic CCU2 2.57.5 and CCU3 3.57.5 devices allow remote code execution.

10.0 Critical

CVE-2021-33032 is a critical vulnerability (CVSS 10.0) in Eq-3 Homematic Ccu2 Firmware, published July 22, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 52.2%, the 98th percentile. No source names a fixed version.

What does this mean?
Severity
10.0 CriticalCVSS 3.1, NVD
Exploit chance
52.2%EPSS, 98th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
No fix listedNo source names one

Description

A Remote Code Execution (RCE) vulnerability in the WebUI component of the eQ-3 HomeMatic CCU2 firmware up to and including version 2.57.5 and CCU3 firmware up to and including version 3.57.5 allows remote unauthenticated attackers to execute system commands as root via a simple HTTP request.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

52.2%Up 50.3 points since Jul 23, 2021
90%50%10%1%

Affected products

What each source reports

NVD Score used10.0

A Remote Code Execution (RCE) vulnerability in the WebUI component of the eQ-3 HomeMatic CCU2 firmware up to and including version 2.57.5 and CCU3 firmware up to and including version 3.57.5 allows remote unauthenticated attackers to execute system commands as root via a simple HTTP request.

Record
CVE-2021-33032
CVSS 3.1
10.0 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0
10.0 HighAV:N/AC:L/Au:N/C:C/I:C/A:C
Weakness
CWE-78
Updated
2026-11-02
CVE ListNo score

A Remote Code Execution (RCE) vulnerability in the WebUI component of the eQ-3 HomeMatic CCU2 firmware up to and including version 2.57.5 and CCU3 firmware up to and including version 3.57.5 allows remote unauthenticated attackers to execute system commands as root via a simple HTTP request.

Record
CVE-2021-33032
Updated
2026-11-02
EUVDEUVD-2021-19752No score

A Remote Code Execution (RCE) vulnerability in the WebUI component of the eQ-3 HomeMatic CCU2 firmware up to and including version 2.57.5 and CCU3 firmware up to and including version 3.57.5 allows remote unauthenticated attackers to execute system commands as root via a simple HTTP request.

Record
EUVD-2021-19752
Updated
2026-11-03
GitHub AdvisoriesGHSA-r7xr-9q5c-fh23No score

eQ-3 HomeMatic CCU2 2.57.5 and CCU3 3.57.5 devices allow remote code execution.

eQ-3 HomeMatic CCU2 2.57.5 and CCU3 3.57.5 devices allow remote code execution.

Record
GHSA-r7xr-9q5c-fh23
Weakness
CWE-78
Updated
2026-11-02

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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