CVE-2024-4904Public exploitNetwork attack vector

Authenticated code execution via unrestricted PHP upload

Published May 15, 2024 · Updated Aug 1, 2024

Unrestricted file upload in Byzoro Smart S200 Management Platform 20240507 allows remote authenticated users to execute arbitrary PHP code. The /useratte/userattestation.php endpoint accepts a multipart web_img file without restricting its type and stores it under /boot/web/upload/weblogo/. A valid PHP session is required; requesting the uploaded file from that web-accessible directory executes attacker-supplied code.

CVSS severity5.3
Medium
EPSS probability0.62%
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 Byzoro Smart S200 Management Platform 20240507 allows remote authenticated users to execute arbitrary PHP code. The /useratte/userattestation.php endpoint accepts a multipart web_img file without restricting its type and stores it under /boot/web/upload/weblogo/. A valid PHP session is required; requesting the uploaded file from that web-accessible directory executes attacker-supplied code.

The record

CVE
CVE-2024-4904
Published
May 15, 2024
Updated
Aug 1, 2024
Vendor
Byzoro
Product
Smart S200 Management Platform
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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=20240507

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Byzoro · Smart S200 Management Platformversion=20240507

Published CVSS scores

5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
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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