CVE-2025-3798Public exploitNetwork attack vector

Authenticated code execution via unvalidated image upload

Published Apr 19, 2025 · Updated Apr 21, 2025

Unrestricted file upload in WCMS 11 allows remote authenticated users to execute server-side PHP through the advertisement image form. The sub handler in app/admin/AdvadminController.php passes image uploads to AdvService.addAdv and Image.upload while checking only size, not file type, extension, or content. Administrative privileges are required; an uploaded script remains web-accessible and executes with the web server's permissions.

CVSS severity7.2
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Unrestricted file upload in WCMS 11 allows remote authenticated users to execute server-side PHP through the advertisement image form. The sub handler in app/admin/AdvadminController.php passes image uploads to AdvService.addAdv and Image.upload while checking only size, not file type, extension, or content. Administrative privileges are required; an uploaded script remains web-accessible and executes with the web server's permissions.

The record

CVE
CVE-2025-3798
Published
Apr 19, 2025
Updated
Apr 21, 2025
Vendor
phpwcms
Product
phpwcms
Classifications
CWE-284, CWE-434, T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 2025Record 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=11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

phpwcms · phpwcmsversion=11

Published CVSS scores

4.7VulDBCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
7.2NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.7VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
5.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
5.8VulDBAV:N/AC:L/Au:M/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.

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

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-284Improper Access Control
CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Server Software Component: Web 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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