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CVE-2023-4121

30
FAUCET Score

CVE-2023-4121 is a critical unrestricted upload vulnerability affecting the Byzoro Smart S85F Management Platform up to version 20230722. This flaw allows an unauthenticated attacker to remotely upload arbitrary files by manipulating the 'file_upload' argument, leading to a complete compromise of confidentiality, integrity, and availability. While public exploit details exist, there is no evidence of active exploitation, Metasploit modules, or significant community discussion, and the vendor has not responded to disclosure attempts.

Impacted Technologies

VendorProductVersion(s)CPE
<= 20230722CPE matchmatch criteria
cpe:2.3:a:byzoro:smart_s85f:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
3.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.28%
Probability of exploitation in next 30 days
EPSS Percentile
81.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0228 is in the 71st percentile among its peer group of 36,862 CVEs.

Social Chatter

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.

Media 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

Remediation records are not available for this CVE.

References

github.com / torres14852/cve/blob/main/upload.md
ExploitThird Party Advisory
vuldb.com
Permissions RequiredThird Party AdvisoryVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
vuldb.com