CVE-2024-0300Public exploitNetwork attack vector

Authenticated code execution via unrestricted PHP upload

Published Jan 8, 2024 · Updated Sep 4, 2024

Unrestricted file upload in Byzoro Smart S150 Management Platform 20240101 allows remote authenticated users to execute PHP code. The /useratte/userattestation.php handler accepts a multipart web_img filename and body without restricting dangerous file types, then stores the file in a web-accessible upload path. A valid PHP session is required; successful exploitation executes uploaded PHP code in the appliance web-server context.

CVSS severity9.8
Critical
EPSS probability5.70%
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 S150 Management Platform 20240101 allows remote authenticated users to execute PHP code. The /useratte/userattestation.php handler accepts a multipart web_img filename and body without restricting dangerous file types, then stores the file in a web-accessible upload path. A valid PHP session is required; successful exploitation executes uploaded PHP code in the appliance web-server context.

The record

CVE
CVE-2024-0300
Published
Jan 8, 2024
Updated
Sep 4, 2024
Vendor
Byzoro
Product
Smart S150 Management Platform
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 8, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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=20240101
  2. Affected versionversion=2024-01-01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Byzoro · Smart S150 Management Platformversion=20240101; version=2024-01-01

Published CVSS scores

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
6.3VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
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 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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