Is CVE-2021-40222 actively exploited?

No active exploitation of CVE-2021-40222 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-40222 be exploited remotely?

Yes. CVE-2021-40222 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-40222?

CVE-2021-40222 has a CVSS score of 7.2 (HIGH).

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HIGH

CVE-2021-40222

CWE-78Published: September 9, 2021· Updated: Jun 17, 2026

7.2

CVSS v3.1

Official Description

Rittal CMC PU III Web management Version affected: V3.11.00_2. Version fixed: V3.17.10 is affected by a remote code execution vulnerablity. It is possible to introduce shell code to create a reverse shell in the PU-Hostname field of the TCP/IP Configuration dialog. Web application fails to sanitize user input on Network TCP/IP configuration page. This allows the attacker to inject commands as root on the device which will be executed once the data is received.

NVD Source

Technical Analysis

CVE-2021-40222 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.2.