CVE-2023-5492Public exploitNetwork attack vector

Authenticated code execution via unrestricted PHP upload

Published Oct 10, 2023 · Updated Aug 2, 2024

Unrestricted file upload in Byzoro Smart S45F 20230928 allows remote authenticated users to write executable PHP files. The /sysmanage/licence.php handler accepts a multipart file_upload value containing PHP code and places it under the web-accessible /home/upload path without restricting the uploaded content. An authenticated PHP session is required, and requesting the stored file executes attacker-supplied code with the web service's privileges.

CVSS severity6.3
Medium
EPSS probability1.85%
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 S45F 20230928 allows remote authenticated users to write executable PHP files. The /sysmanage/licence.php handler accepts a multipart file_upload value containing PHP code and places it under the web-accessible /home/upload path without restricting the uploaded content. An authenticated PHP session is required, and requesting the stored file executes attacker-supplied code with the web service's privileges.

The record

CVE
CVE-2023-5492
Published
Oct 10, 2023
Updated
Aug 2, 2024
Vendor
Byzoro
Product
Smart S45F
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

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  1. Affected versionversion=20230928

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Byzoro · Smart S45Fversion=20230928

Published CVSS scores

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
6.5VulDBAV:N/AC:L/Au:S/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.

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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

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Technologies

Your stack

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Your stack

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