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CVE-2021-4225

28
FAUCET Score

CVE-2021-4225 is a critical vulnerability affecting the SP Project & Document Manager WordPress plugin prior to version 4.24, specifically on Windows servers. It allows any authenticated user, including subscribers, to bypass file extension checks and upload executable files, such as PHP backdoors. This vulnerability carries a high CVSS score of 8.8, indicating a severe risk due to its low attack complexity and potential for complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the potential for unauthorized code execution makes it a significant threat.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.24CPE matchmatch criteria
cpe:2.3:a:smartypantsplugins:sp_project_\&_document_manager:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
1.69%
Probability of exploitation in next 30 days
EPSS Percentile
74.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0169 is in the 73rd 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 / pang0lin/CVEproject/blob/main/wordpress_SP-Project_fileupload.md
ExploitThird Party Advisory
wpscan.com / vulnerability/bd1083d1-edcc-482e-a8a9-c8b6c8d417bd
ExploitThird Party Advisory