CVE-2021-24216Public exploitNetwork attack vector

Administrator code execution via unchecked import filename

Published Mar 7, 2022 · Updated Aug 3, 2024

Unrestricted file upload in ServMask All-in-One WP Migration before 7.41 allows remote authenticated users to execute PHP code. The import endpoint accepts attacker-controlled upload-file, storage, and archive parameters without enforcing the .wpress extension, leaving a PHP payload in the web-accessible plugin storage directory. Administrator access to WordPress is required, and requesting the stored PHP file executes its contents with the web server's privileges.

CVSS severity7.2
High
EPSS probability1.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in ServMask All-in-One WP Migration before 7.41 allows remote authenticated users to execute PHP code. The import endpoint accepts attacker-controlled upload-file, storage, and archive parameters without enforcing the .wpress extension, leaving a PHP payload in the web-accessible plugin storage directory. Administrator access to WordPress is required, and requesting the stored PHP file executes its contents with the web server's privileges.

The record

CVE
CVE-2021-24216
Published
Mar 7, 2022
Updated
Aug 3, 2024
Vendor
ServMask
Product
All-in-One WP Migration and Backup
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 7, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.41 <7.41

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

ServMask · All-in-One WP Migration and Backupversion=7.41 <7.41

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.5NVDAV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Web Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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