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Vulnerability record · CVE-2023-5491 · published 10 October 2023

CVE-2023-5491: Byzoro smart s45f firmware unrestricted file upload vulnerability

BByzoro · Smart S45f Firmware

A vulnerability, which was classified as critical, has been found in Byzoro Smart S45F Multi-Service Secure Gateway Intelligent Management Platform up to 20230928. This issue affects some unknown processing of the file /sysmanage/updatelib.php. The manipulation of the argument file_upload leads to unrestricted upload. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-241643. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

8.8 CVSS 3.1 High EPSS 1.7% · top 23.5% CWE-434 · Unrestricted file upload
8.8CVSS 3.1 base score, v2 6.5
1.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A vulnerability, which was classified as critical, has been found in Byzoro Smart S45F Multi-Service Secure Gateway Intelligent Management Platform up to 20230928. This issue affects some unknown processing of the file /sysmanage/updatelib.php. The manipulation of the argument file_upload leads to unrestricted upload. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-241643. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-4873Byzoro smart s45f firmware os command injection vulnerabilityA vulnerability, which was classified as critical, was found in Byzoro Smart S45F Multi-Service Secure Gateway Intelligent Management Platform up to …EPSS 22%9.8CVE-2023-4745Byzoro smart s45f firmware sql injection vulnerabilityA vulnerability was found in Byzoro Smart S45F Multi-Service Secure Gateway Intelligent Management Platform up to 20230822. It has been rated as crit…EPSS 1.9%8.8CVE-2023-5492Byzoro smart s45f firmware unrestricted file upload vulnerabilityA vulnerability, which was classified as critical, was found in Byzoro Smart S45F Multi-Service Secure Gateway Intelligent Management Platform up to …EPSS 1.8%8.8CVE-2023-5493Byzoro smart s45f firmware unrestricted file upload vulnerabilityA vulnerability has been found in Byzoro Smart S45F Multi-Service Secure Gateway Intelligent Management Platform up to 20230928 and classified as cri…EPSS 1.7%8.8CVE-2023-5494Byzoro smart s45f firmware os command injection vulnerabilityA vulnerability was found in Byzoro Smart S45F Multi-Service Secure Gateway Intelligent Management Platform up to 20230928 and classified as critical…EPSS 15%8.8CVE-2023-5489Byzoro smart s45f firmware unrestricted file upload vulnerabilityA vulnerability classified as critical has been found in Byzoro Smart S45F Multi-Service Secure Gateway Intelligent Management Platform up to 2023092…EPSS 1.7%8.8CVE-2023-5490Byzoro smart s45f firmware unrestricted file upload vulnerabilityA vulnerability classified as critical was found in Byzoro Smart S45F Multi-Service Secure Gateway Intelligent Management Platform up to 20230928. Th…EPSS 1.7%8.8CVE-2023-5488Byzoro smart s45f firmware unrestricted file upload vulnerabilityA vulnerability was found in Byzoro Smart S45F Multi-Service Secure Gateway Intelligent Management Platform up to 20230928. It has been rated as crit…EPSS 1.8%

Source: NIST National Vulnerability Database (record CVE-2023-5491), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.