CVE-2023-4120Public exploitNetwork attack vector

Command execution via SQL-written PHP web shell

Published Aug 3, 2023 · Updated Oct 15, 2024

Command injection in Byzoro Smart S85F Management Platform 20230722 allows remote authenticated users to execute OS commands. The importhtml.php exporthtmlmail path accepts a Base64-encoded sql argument that writes a PHP command shell beneath the web root. The published request then sends cmd=id to that shell; the CNA rates low-privileged access as required, while NVD assesses it as unauthenticated.

CVSS severity9.8
Critical
EPSS probability62.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Byzoro Smart S85F Management Platform 20230722 allows remote authenticated users to execute OS commands. The importhtml.php exporthtmlmail path accepts a Base64-encoded sql argument that writes a PHP command shell beneath the web root. The published request then sends cmd=id to that shell; the CNA rates low-privileged access as required, while NVD assesses it as unauthenticated.

The record

CVE
CVE-2023-4120
Published
Aug 3, 2023
Updated
Oct 15, 2024
Vendor
Byzoro
Product
Smart S85F Management Platform
Classifications
CWE-77, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 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=20230722

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Byzoro · Smart S85F Management Platformversion=20230722

Published CVSS scores

6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
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
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.

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-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059Command and Scripting Interpreter

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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