CVE-2023-4120
Command Injection in Byzoro Smart S85F ≤ 20230722
Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:LCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
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, 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)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-54006
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)
Related Threats
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Affected Assets
Mitigating Controls
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.8.25 mandates secure SDLC practices including secure coding guidelines, security requirements, checkpoints, testing (scans/penetration), and developer training that reduce command injection defects, but leaves a minority slice (e.g. incomplete implementation of those practices, outsourced development without full assurance, or post-SDLC changes) where the weakness can still arise and be exploitable.
Application security requirements explicitly call for controls against injection flaws including command injection.
A.8.27 mandates security-by-design principles (e.g. distrust external input, secure session control, data validation/sanitization, least privilege) and design reviews that can stop command injection from being introduced, but this is only a minority slice of CWE-77 because the weakness can still arise in code that bypasses those principles, in non-reviewed components, or in runtime injection vectors the architecture review does not reach.
Secure coding standards require proper escaping and parameterization of commands, directly eliminating CWE-77.
Security testing in development catches command-injection vulnerabilities before release.
Hardening callouts derived
DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.
- No fine-grained STIG row for CWE-77, a class-level weakness, and none of its children carries one either.