CVE-2024-0939Smart S210 Management Platform Unrestricted File Upload
The manipulation of the argument file_upload leads to unrestricted upload.
Published Jan 26, 2024 · Updated May 29, 2025
Key Facts
Patch immediately- CVE-2024-0939 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Smart S210 Firmware (Byzoro), Smart S210 Management Platform.
- It is not listed in any known-exploited vulnerabilities catalog. A public exploit is reported by tracking sources, but no code link is listed yet.
- EPSS estimates a 44% probability of exploitation in the next 30 days.
- Fixed versions are available, including Smart S210 Firmware <=2024-01-17, Smart S210 Firmware 2024-01-17.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
44%
Higher than 98.7% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
43/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
Description
A vulnerability has been found in Byzoro Smart S210 Management Platform up to 20240117 and classified as critical. This vulnerability affects unknown code of the file /Tool/uploadfile.php. The manipulation of the argument file_upload leads to unrestricted upload.
The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
The identifier of this vulnerability is VDB-252184. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Smart S210 FirmwareByzoro | See advisory | 2024-01-17 |
| Smart S210 Management Platform | >= 20240117 | n/a |
Patched Releases
Smart S210 Firmware
<=2024-01-17
Timeline
Publicly disclosed
Jan 26, 2024
Last updated
May 29, 2025
Weakness Type
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
- advisoryVDB-252184 | CTI Indicators (IOB, IOC, TTP, IOA)
- advisoryVDB-252184 | Byzoro Smart S210 Management Platform uploadfile.php unrestricted upload
- otherSubmit #269268 | Beijing Baizhuo Network Technology Co., Ltd. Smart S210 multi-service security gateway intelligent management platform Smart S210 arbitrary file upload vulnerability
FAQ
Common Questions.
A vulnerability has been found in Byzoro Smart S210 Management Platform up to 20240117 and classified as critical.
Affected: Smart S210 Firmware (Byzoro); Smart S210 Management Platform versions >= 20240117. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
A public exploit is reported by tracking sources, but no code link is listed yet.
Fixed versions are available, including Smart S210 Firmware <=2024-01-17, Smart S210 Firmware 2024-01-17.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2024-0939 On Your Attack Surface?
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