CVE-2023-4739 is a critical unrestricted file upload vulnerability affecting the Byzoro Smart S85F Management Platform up to version 20230820, specifically within the /sysmanage/updateos.php file. This flaw allows an unauthenticated attacker to remotely upload arbitrary files by manipulating the 1_file_upload argument. With a CVSS score of 9.8, the vulnerability poses a severe risk, enabling full compromise of confidentiality, integrity, and availability. While public exploit code exists and the vendor has not responded to disclosure, there is currently no evidence of active exploitation, Metasploit modules, or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 20230820CPE matchmatch criteria | cpe:2.3:o:byzoro:smart_s85f_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.