Cyber Resilience

CVE-2023-5683

Command Injection in Byzoro Smart S85F Firmware ≤ 2023-10-10

Public PoCCommand Injection
Published
21 October 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 0.18 97th percentile
Risk Priority 61 floored blend · peak EPSS

Summary

CVE-2023-5683 is a medium-severity OS Command Injection (CWE-78) vulnerability in Byzoro Smart S85F Firmware. 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 3% 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 vulnerability classified as an OS command injection issue (CWE-78) affects the Byzoro Smart S85F Management Platform through version 20231010. The flaw resides in the file /sysmanage/importconf.php, where manipulation of the btn_file_renew argument permits arbitrary command execution. It carries a CVSS 3.1 score of 6.3 and was publicly disclosed under VDB-243059 after the vendor failed to respond to early notification.

An authenticated remote attacker with low privileges can trigger the flaw over the network without user interaction, resulting in limited impacts to confidentiality, integrity, and availability. Public exploit code has been released, enabling potential unauthorized command execution on the affected management platform.

No vendor patches or official mitigation guidance have been issued. The associated EPSS score remains flat at 0.1785 with no material increase observed since disclosure.

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 20231010 and classified as critical. This issue affects some unknown processing of the file /sysmanage/importconf.php. The manipulation of the argument btn_file_renew leads to os command injection. The attack…

more

may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-243059. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

CWE(s)
CWE-78

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 →
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 →
T1059.001 PowerShell Execution
Adversaries may abuse PowerShell commands and scripts for execution.
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 →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-5684Same product: Byzoro Smart S85F
CVE-2023-4739Same product: Byzoro Smart S85F
CVE-2023-4873Same vendor: Byzoro
CVE-2023-5494Same vendor: Byzoro
CVE-2023-5959Same product: Byzoro Smart S85F
CVE-2023-4414Same product: Byzoro Smart S85F
CVE-2023-4120Same product: Byzoro Smart S85F
CVE-2023-4121Same product: Byzoro Smart S85F
CVE-2024-0292Shared CWE-78
CVE-2023-40479Shared CWE-78

Affected Assets

byzoro
smart s85f firmware
≤ 2023-10-10

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)
  • V1.2.5
  • V1.2.8
  • V15.2.5

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

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

PR.PS-06's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.

PR.PS-02 partial match
prevents

Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).

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.8.29 Security testing in development and acceptance mostly match
finds

Security testing and code review target insecure use of operating-system command interfaces, catching command-injection flaws introduced during development.

References