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CVE-2018-20323

67
FAUCET Score

CVE-2018-20323 is a critical OS command injection vulnerability affecting MailCleaner Community Edition 2018.08, specifically within the www/soap/application/MCSoap/Logs.php component. This flaw allows authenticated remote attackers to execute arbitrary operating system commands, leading to a complete compromise of the affected system. With a CVSS v3 score of 8.8 (High) and an EPSS score indicating high exploitability, this vulnerability poses a significant risk. Exploit code is publicly available via a Metasploit module, though there is no evidence of active exploitation in the wild or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
2018.08CPE matchmatch criteria
cpe:2.3:a:mailcleaner:mailcleaner:2018.08:*:*:*:community:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
54.50%
Probability of exploitation in next 30 days
EPSS Percentile
98.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: Mailcleaner Remote Code Execution · Dec 19, 2018
This CVE's current EPSS score of 0.5450 is in the 98th percentile among its peer group of 17,808 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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

packetstormsecurity.com / files/151056/Mailcleaner-Remote-Code-Execution.html
ExploitThird Party AdvisoryVDB Entry
pentest.blog / advisory-mailcleaner-community-edition-remote-code-execution
ExploitThird Party Advisory