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CVE-2021-40222

24
FAUCET Score

CVE-2021-40222 is a remote code execution vulnerability affecting Rittal CMC PU III Web management firmware versions up to V3.11.00_2. An attacker can inject shell code into the PU-Hostname field of the TCP/IP Configuration, leading to arbitrary command execution as root due to unsanitized user input. With a CVSS score of 7.2 (HIGH), this vulnerability allows for complete compromise of confidentiality, integrity, and availability. There is currently no public exploit code available, and it shows minimal community discussion or media coverage, suggesting it is not actively exploited in the wild.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.11.00_2, < 3.17.10CPE matchmatch criteria
cpe:2.3:o:rittal:cmc_pu_iii_7030.000_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.69%
Probability of exploitation in next 30 days
EPSS Percentile
90.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0469 is in the 90th percentile among its peer group of 5,531 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / asang17/CVE-2021-RCE
ExploitThird Party Advisory