How severe is CVE-2021-4225?

CVE-2021-4225 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-4225 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-4225?

CVE-2021-4225 affects Smartypantsplugins Sp Project & Document Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-4225?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-4225 published?

CVE-2021-4225 was published on 2022-04-25 and last updated on 2026-06-17.

CVE-2021-4225

CVE-2021-4225 is a high-severity vulnerability in Smartypantsplugins Sp Project & Document Manager with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Smartypantsplugins Sp Project & Document Manager
Published: 2022-04-25
Last modified: 2026-06-17

Description

The SP Project & Document Manager WordPress plugin before 4.24 allows any authenticated users, such as subscribers, to upload files. The plugin attempts to prevent PHP and other similar files that could be executed on the server from being uploaded by checking the file extension. It was discovered that on Windows servers, the security checks in place were insufficient, enabling bad actors to potentially upload backdoors on vulnerable sites.

Frequently asked questions

What is CVE-2021-4225?: The SP Project & Document Manager WordPress plugin before 4.24 allows any authenticated users, such as subscribers, to upload files. The plugin attempts to prevent PHP and other similar files that could be executed on the server from being uploaded by checking the file extension. It was discovered that on Windows servers, the security checks in place were insufficient, enabling bad actors to potentially upload backdoors on vulnerable sites.
How severe is CVE-2021-4225?: CVE-2021-4225 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-4225 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-4225?: CVE-2021-4225 affects Smartypantsplugins Sp Project & Document Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-4225?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-4225 published?: CVE-2021-4225 was published on 2022-04-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:smartypantsplugins:sp_project_\&_document_manager:*:*:*:*:*:wordpress:*:*

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