Which products and versions are affected by CVE-2021-33032?

Affected: Homematic Ccu2 Firmware (Eq-3); Homematic Ccu3 Firmware (Eq-3). The full list is in the CVE brief.

Is CVE-2021-33032 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2021-33032 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2021-33032?

No public exploit code is known.

How urgently should CVE-2021-33032 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2021-33032

Critical

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…

Published Jul 22, 2021 · Updated Nov 21, 2024

Key Facts

Patch immediately

CVE-2021-33032 is a critical-severity vulnerability (CVSS 10.0 v3.1) affecting Homematic Ccu2 Firmware (Eq-3), Homematic Ccu3 Firmware (Eq-3).
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 52% probability of exploitation in the next 30 days.
Fixed versions are available, including Homematic Ccu2 Firmware <=2.57.5, Homematic Ccu3 Firmware <=3.57.5, Homematic Ccu2 Firmware 2.57.5.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

10.0

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

52%

Higher than 98.9% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2021-33032 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
Homematic Ccu2 FirmwareEq-3	See advisory	2.57.5
Homematic Ccu3 FirmwareEq-3	See advisory	3.57.5

Patched Releases

Homematic Ccu2 Firmware

<=2.57.5

Homematic Ccu3 Firmware

<=3.57.5

Timeline

Publicly disclosed
Jul 22, 2021
Last updated
Nov 21, 2024

Weakness Type

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

FAQ

Common Questions.

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.
Affected: Homematic Ccu2 Firmware (Eq-3); Homematic Ccu3 Firmware (Eq-3). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Homematic Ccu2 Firmware <=2.57.5, Homematic Ccu3 Firmware <=3.57.5, Homematic Ccu2 Firmware 2.57.5.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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