CVE-2021-33032
CRITICAL
10
CVSS Score
Published: July 22, 2021 at 05:45 PM UTC
Updated: June 17, 2026 at 03:54 AM UTC
4 products affected across 1 vendorHomematic CCU2 FirmwareHomematic CCU3 FirmwareHomematic Ccu3
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Severity
CRITICAL10
Exploit prediction
EPSS 52%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Homematic Ccu2· Eq 3device
80%All versions
Homematic Ccu3· Eq 3device
80%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://novag.github.io/posts/homematic-unauthenticated-remote-code-execution/x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://www.eq-3.de/downloads/software/HM-CCU2-Firmware_Updates/HM-CCU-2.59.7/HM-CCU2-Changelog.2.59.7.pdfx_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://www.eq-3.de/downloads/software/firmware/ccu3-firmware/CCU3-Changelog.3.59.6.pdfCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-78
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