CVE-2023-5491: Byzoro Smart s45f Firmware

High severity, CVSS 8.8. EPSS: 1.7% chance of exploitation in the next 30 days.

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.

Affected products

• Byzoro Smart s45f Firmware: up to and including 20230928

Published 2023-10-10. Last modified 2026-06-17.