CVE-2023-5491
CVSS v3
8.8
HIGH
EPSS Score
1.7 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A vulnerability, which was classified as critical, has been found in Byzoro Smart S45F Multi-Service Secure Gateway Intelligent Management Platform up to 20230928. This issue affects some unknown processing of the file /sysmanage/updatelib.php. The manipulation of the argument file_upload leads to unrestricted upload. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-241643. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Technical details
- Published
- 2023-10-10
Frequently asked questions
What is CVE-2023-5491?
A vulnerability, which was classified as critical, has been found in Byzoro Smart S45F Multi-Service Secure Gateway Intelligent Management Platform up to 20230928. This issue affects some unknown processing of the file /sysmanage/updatelib.php. The manipulation of the argument file_upload leads to unrestricted upload. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-241643. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Is CVE-2023-5491 actively exploited?
Active exploitation of CVE-2023-5491 has not been confirmed. Its EPSS score was 1.7% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2023-5491?
CVE-2023-5491 has a CVSS v3 base score of 8.8 (HIGH severity).
Is CVE-2023-5491 affecting your environment?
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