CVE-2024-58280Public exploitNetwork attack vector

Authenticated code execution via user-file extension override

Published Dec 10, 2025 · Updated Dec 10, 2025

Code execution in CMSimple 5.15 allows remote authenticated users to upload and run arbitrary PHP files through the web interface. The Settings > CMS form accepts php as an Extensions_userfiles suffix, and the Media uploader then stores the file beneath userfiles/media. An authenticated session with CMS settings access is required; a stored shell runs with the web server's PHP privileges and permits server-side code execution.

CVSS severity8.6
High
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Code execution in CMSimple 5.15 allows remote authenticated users to upload and run arbitrary PHP files through the web interface. The Settings > CMS form accepts php as an Extensions_userfiles suffix, and the Media uploader then stores the file beneath userfiles/media. An authenticated session with CMS settings access is required; a stored shell runs with the web server's PHP privileges and permits server-side code execution.

The record

CVE
CVE-2024-58280
Published
Dec 10, 2025
Updated
Dec 10, 2025
Vendor
CMSimple
Product
CMSimple
Classifications
CWE-403, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=5.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CMSimple · CMSimpleversion=5.15

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.6VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-403Exposure of File Descriptor to Unintended Control Sphere ('File Descriptor Leak')
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo