Cyber Resilience

CVE-2023-4120

Command Injection in Byzoro Smart S85F ≤ 20230722

Public PoCHigh EPSSCommand Injection
Published
03 August 2023
Modified
21 November 2024
CVSS Score v3.1 6.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
EPSS Score 0.65 99.2th percentile
Risk Priority 75 floored blend · peak EPSS

Summary

CVE-2023-4120 is a medium-severity Command Injection (CWE-77) vulnerability in Byzoro Smart S85F. Its CVSS base score is 6.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 0.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

A command injection vulnerability exists in the Byzoro Smart S85F Management Platform up to version 20230722. The flaw resides in the file importhtml.php, where the sql parameter is insufficiently sanitized, allowing an attacker to inject operating system commands. It is tracked as CVE-2023-4120, assigned CWE-77, and carries a CVSS 3.1 score of 6.3.

An authenticated remote attacker can supply a crafted sql value to the affected endpoint and execute arbitrary commands on the underlying server. Public exploit code has been released, enabling an adversary to achieve limited confidentiality, integrity, and availability impacts without user interaction.

No vendor patch or official advisory has been issued; the supplier was notified prior to disclosure but did not respond. The associated EPSS score currently stands at 0.6283 with a recorded peak of 0.6555, indicating sustained public interest in the published exploit.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

A vulnerability was found in Byzoro Smart S85F Management Platform up to 20230722 and classified as critical. This issue affects some unknown processing of the file importhtml.php. The manipulation of the argument sql leads to command injection. The attack may…

more

be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-235967. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

CWE(s)
CWE-77

Related Threats

MITRE ATT&CK Enterprise Techniques

T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.001 PowerShell Execution
Adversaries may abuse PowerShell commands and scripts for execution.
attack.mitre.org →
T1059.003 Windows Command Shell Execution
Adversaries may abuse the Windows command shell for execution.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
T1059.008 Network Device CLI Execution
Adversaries may abuse scripting or built-in command line interpreters (CLI) on network devices to execute malicious command and payloads.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-4414Same product: Byzoro Smart S85F
CVE-2023-4121Same product: Byzoro Smart S85F
CVE-2023-5683Same product: Byzoro Smart S85F
CVE-2023-5684Same product: Byzoro Smart S85F
CVE-2023-4739Same product: Byzoro Smart S85F
CVE-2023-5959Same product: Byzoro Smart S85F
CVE-2024-53672Shared CWE-77
CVE-2024-38228Shared CWE-77
CVE-2023-1389Shared CWE-77
CVE-2023-46409Shared CWE-77

Affected Assets

byzoro
smart s85f
≤ 20230722

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.2.3
  • V1.2.5
  • V1.2.8
  • V1.2.9

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input validation and neutralization that prevent command injection.

DE.CM-09 partial match
prevents

Runtime monitoring of software and data can detect anomalous command execution resulting from injection.

ID.RA-01 partial match
prevents

Identifying recorded vulnerabilities enables remediation of command-injection flaws before exploitation.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.28 Secure coding mostly match
prevents

Secure coding standards require proper escaping and parameterization of commands, directly eliminating CWE-77.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development catches command-injection vulnerabilities before release.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates input validation and command construction practices that directly prevent command injection.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly call for controls against injection flaws including command injection.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles reduce the attack surface but do not prescribe the specific neutralization techniques needed.

A.8.31 Separation of development, test and production environments none match
none

Environment separation limits the blast radius of an exploited command injection but does not prevent the flaw itself.

References