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CVE-2020-21784

28
FAUCET Score

CVE-2020-21784 describes a critical code injection vulnerability in phpwcms version 1.9.13, specifically within the /phpwcms/setup/setup.php component. This flaw carries a CVSS score of 9.8 (Critical), indicating it can be exploited remotely without authentication and lead to complete compromise of confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, the high severity and ease of exploitation warrant attention.

Impacted Technologies

VendorProductVersion(s)CPE
1.9.13CPE matchmatch criteria
cpe:2.3:a:phpwcms:phpwcms:1.9.13:*:*:*:*:*:*:*

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
1.40%
Probability of exploitation in next 30 days
EPSS Percentile
69.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0140 is in the 56th 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

No media coverage found for this CVE.

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

cwe.mitre.org / data/definitions/96.html
Technical Description
github.com / slackero/phpwcms/issues/286
ExploitIssue TrackingThird Party Advisory