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CVE-2023-5491

24
FAUCET Score

CVE-2023-5491 is a critical unrestricted file upload vulnerability affecting Byzoro Smart S45F Multi-Service Secure Gateway Intelligent Management Platform up to version 20230928. An authenticated attacker can remotely exploit this flaw by manipulating the 'file_upload' argument in the /sysmanage/updatelib.php file. With a CVSS score of 8.8 (High), successful exploitation could lead to full compromise of confidentiality, integrity, and availability. While the exploit has been publicly disclosed, there is no evidence of active exploitation, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 20230928CPE matchmatch criteria
cpe:2.3:o:byzoro:smart_s45f_firmware:*:*:*:*:*:*:*:*

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
1.72%
Probability of exploitation in next 30 days
EPSS Percentile
75.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0172 is in the 73rd percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / llixixi/cve/blob/main/s45_upload_changelogo.md
ExploitThird Party Advisory
vuldb.com
Permissions RequiredThird Party Advisory
vuldb.com
Third Party Advisory
vuldb.com