Arbitrary file upload in Byzoro Smart S85f
CVE-2023-4739
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.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.036 (89.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.031 · newest: 0.036 · change: +0.005
Affected products
- Byzoro Smart S85f
- Byzoro Smart S85f Firmware
- Byzoro Smart S85f Management Platform — versions 20230820
Weakness classification (CWE)
References
- vuldb.com/ (Permissions Required, technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry, Third Party Advisory)
- vuldb.com/ (third-party-advisory)
- github.com/Meizhi-hua/cve/blob/main/upload_file.md (Exploit, exploit)
Frequently asked questions
- What is CVE-2023-4739?
- CVE-2023-4739 is a medium-severity vulnerability in Byzoro Smart S85f, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 6.3/10. Published 2023-09-03.
- How severe is CVE-2023-4739?
- Medium severity. CVSS v3 base score is 6.3 out of 10.