CVE-2023-6574: Byzoro Smart s20 Firmware

High severity, CVSS 8.8. EPSS: 1.6% chance of exploitation in the next 30 days.

A vulnerability was found in Byzoro Smart S20 up to 20231120 and classified as critical. Affected by this issue is some unknown functionality of the file /sysmanage/updateos.php of the component HTTP POST Request Handler. The manipulation of the argument 1_file_upload leads to unrestricted upload. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-247154 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Byzoro Smart s20 Firmware: up to and including 2023-11-20

Published 2023-12-07. Last modified 2026-06-17.