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CVE-2018-20062

99
FAUCET Score

CVE-2018-20062 is a critical remote code execution (RCE) vulnerability affecting NoneCms V1.3, specifically within the thinkphp/library/think/App.php component. Attackers can leverage a crafted 'filter' parameter in the URL to execute arbitrary PHP code on the server. This vulnerability carries a CVSS score of 9.8 (CRITICAL), indicating it can be exploited remotely without authentication, with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. Its high EPSS score and FAUCET Risk Score of 100/100 underscore its significant threat. CVE-2018-20062 is actively exploited in the wild, with readily available exploit code including Metasploit modules and Nuclei templates. It has garnered substantial community discussion and media coverage, with reports of Chinese threat actors exploiting it to install 'Dama' web shells.

Impacted Technologies

VendorProductVersion(s)CPE
1.3.0CPE matchmatch criteria
cpe:2.3:a:5none:nonecms:1.3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
99.53%
Probability of exploitation in next 30 days
EPSS Percentile
99.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Nov 3, 2021
Metasploit: ThinkPHP Multiple PHP Injection RCEs · Dec 10, 2018
Nuclei: CVE-2018-20062 · May 19, 2025
ExploitDB: EDB-48333 · Apr 16, 2020
This CVE's current EPSS score of 0.9953 is in the 100th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
packetstormsecurity.com / files/157218/ThinkPHP-5.0.23-Remote-Code-Execution.html
ExploitThird Party AdvisoryVDB Entry
github.com / nangge/noneCms/issues/21
ExploitThird Party Advisory