CVE-2021-33032

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Published Jul 22, 2021 CVSS 3.1 · 10.0 Critical EPSS 52.2% KEV · Not listed

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

AND

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

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

Configuration 2 [-]

AND

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

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

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

Exploit prediction score: 52.2% (52.161% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://novag.github.io/posts/homematic-unauthenticated-remote-code-execution/
https://www.eq-3.de/downloads/software/HM-CCU2-Firmware_Updates/HM-CCU-2.59.7/HM-CCU2-Changelog.2.59.7.pdf
https://www.eq-3.de/downloads/software/firmware/ccu3-firmware/CCU3-Changelog.3.59.6.pdf

History

No history.

Subscriptions

Eq-3 Homematic Ccu2 Homematic Ccu2 Firmware Homematic Ccu3 Homematic Ccu3 Firmware

Weaknesses

CWE-78

Sources

CVE record Updated: Aug 3, 2024, 11:42 PM

Status: PUBLISHED
Assigner: mitre
Published: Jul 22, 2021, 5:45 PM
Updated: Aug 3, 2024, 11:42 PM
Reserved: May 14, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:54 AM

Status: Modified
Published: Jul 22, 2021, 6:15 PM
Modified: Jun 17, 2026, 3:54 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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