CVE-2022-28521Public exploitNetwork attack vector

Remote code execution via unfiltered file inclusion

Published Apr 26, 2022 · Updated Aug 3, 2024

File inclusion in ZCMS 20170206 allows remote attackers to execute arbitrary PHP code through the sp_set_config action. The action in Application/Home/Controller/HomeController.class.php directly includes an attacker-supplied file without filtering its path or content, enabling creation of a PHP web shell in the web root. No authentication or user interaction is required, and successful exploitation executes code with the web server process's privileges.

CVSS severity9.8
Critical
EPSS probability1.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

File inclusion in ZCMS 20170206 allows remote attackers to execute arbitrary PHP code through the sp_set_config action. The action in Application/Home/Controller/HomeController.class.php directly includes an attacker-supplied file without filtering its path or content, enabling creation of a PHP web shell in the web root. No authentication or user interaction is required, and successful exploitation executes code with the web server process's privileges.

The record

CVE
CVE-2022-28521
Published
Apr 26, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1505.003, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 26, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1505.003Web Shell
T1190Exploit Public-Facing Application

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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