Rittal CMC PU III Web management Version affected: V3.11.00_2.

published 2021-09-09 5y ago modified 2026-06-17 4mo ago also EUVD-2021-27406

cvss: 7.2; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 4.7%; EPSS 4.7% chance of exploitation in 30 days, percentile 91%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

rittal cmc_pu_iii_7030.000_firmware 3.17.10

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Exploit prediction

4.69% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

github.com https://github.com/asang17/CVE-2021-RCE referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	9.0	AV:N/AC:L/Au:S/C:C/I:C/A:C

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

github.com /asang17/CVE-2021-RCE
exploit, third-party-advisory

Sources

CVE List CVE-2021-40222
NVD CVE-2021-40222

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