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CVE-2021-33032 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:10 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://novag.github.io/posts/homematic-unauthenticated-remote-code-execution/ CVEExploitThird Party Advisory
https://www.eq-3.de/downloads/software/firmware/ccu3-firmware/CCU3-Changelog.3.59.6.pdf CVERelease NotesVendor Advisory
https://www.eq-3.de/downloads/software/HM-CCU2-Firmware_Updates/HM-CCU-2.59.7/HM-CCU2-Changelog.2.59.7.pdf CVERelease NotesVendor Advisory
https://novag.github.io/posts/homematic-unauthenticated-remote-code-execution/ [email protected]ExploitThird Party Advisory
https://www.eq-3.de/downloads/software/firmware/ccu3-firmware/CCU3-Changelog.3.59.6.pdf [email protected]Release NotesVendor Advisory

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')[email protected]

Affected Products

ProductVersions
eq-3 homematic ccu2 firmware
<= 2.57.5

CPE

  • cpe:2.3:o:eq-3:homematic_ccu2_firmware:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
eq-3 homematic ccu2
All versions

CPE

  • cpe:2.3:h:eq-3:homematic_ccu2:-:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
eq-3 homematic ccu3 firmware
<= 3.57.5

CPE

  • cpe:2.3:o:eq-3:homematic_ccu3_firmware:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
eq-3 homematic ccu3
All versions

CPE

  • cpe:2.3:h:eq-3:homematic_ccu3:-:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-33032
NVD Published Date:
Jul 22, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-33032 Details - Not Deferred