CVE-2021-40222

Name: CVE-2021-40222
Creator: NVD / NIST
Published: 2021-09-09T12:15:10.057+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 4.54%

Last modified Jun 17, 2026

CVE-2021-40222 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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. EPSS estimates a 4.54% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.2/10

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

EPSS Probability

4.54%

90.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Rittal	Cmc Pu Iii 7030.000 Firmware	>= 3.11.00_2, < 3.17.10

References

https://github.com/asang17/CVE-2021-RCEExploit, Third Party Advisory
https://github.com/asang17/CVE-2021-RCEExploit, Third Party Advisory

Timeline

Published: Sep 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-40222?

How severe is CVE-2021-40222?

CVE-2021-40222 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 4.54% probability of exploitation in the next 30 days.

How do I fix CVE-2021-40222?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-40222?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST