What’s Vulnerable › Vulnerabilities

CVE-2023-4739: Byzoro Smart S85F Management Platform updateos.php unrestricted upload

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-09-03 · updated 2026-06-17
• Weakness: CWE-434

Description

A vulnerability, which was classified as critical, has been found in Byzoro Smart S85F Management Platform up to 20230820. Affected by this issue is some unknown functionality of the file /sysmanage/updateos.php. 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. The identifier of this vulnerability is VDB-238628. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

• Byzoro Smart S85F Management Platform: through 20230820

References

• https://github.com/Meizhi-hua/cve/blob/main/upload_file.md
• https://vuldb.com/?ctiid.238628
• https://vuldb.com/?id.238628
• https://vuldb.com/?submit.197572
• https://github.com/Meizhi-hua/cve/blob/main/upload_file.md
• https://vuldb.com/?ctiid.238628
• https://vuldb.com/?id.238628
• https://vuldb.com/?submit.197572

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