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CVE-2018-20599

28
FAUCET Score

CVE-2018-20599 is a critical vulnerability affecting UCMS version 1.4.7, allowing remote attackers to execute arbitrary PHP code. This flaw stems from improper handling of user input during an index.php sadmin_fileedit action, enabling code injection. With a CVSS score of 8.8 (High), exploitation is straightforward, requiring only low privileges and no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or KEV entries exist, and community discussion is minimal, the high FAUCET Risk Score of 71/100 indicates significant potential danger.

Impacted Technologies

VendorProductVersion(s)CPE
1.4.7CPE matchmatch criteria
cpe:2.3:a:ucms_project:ucms:1.4.7:*:*:*:*:*:*:*

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
1.51%
Probability of exploitation in next 30 days
EPSS Percentile
71.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0151 is in the 70th percentile among its peer group of 17,844 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

github.com / AvaterXXX/CVEs/blob/master/ucms.md
ExploitThird Party Advisory