Vulnerability report

Exploitation attempts observed in the wild High confidence Not in CISA KEV

CVE-2023-5683

Smart S85F Management Platform Command Injection

Byzoro / Smart S85F Management Platform · 20231010

Watch CVE-2023-5683 Browse KEV feed
Severity
CVSS 6.3 · Medium
Confidence
High
Exploit status
Exploitation attempts observed in the wild
EPSS
9.3%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2023-5683 is a vulnerability affecting Byzoro Smart S85F Management Platform. A vulnerability was found in Byzoro Smart S85F Management Platform up to 20231010 and classified as critical. This issue affects some...

Have exploitation attempts been observed?

Yes. Exploitation attempts have been reported for this vulnerability. Previdian lists it as a known exploited vulnerability. Also reported by third-party sources. Confidence is high.

Who is affected?

Byzoro / Smart S85F Management Platform 20231010.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

A vulnerability was found in Byzoro Smart S85F Management Platform up to 20231010 and classified as critical

A vulnerability was found in Byzoro Smart S85F Management Platform up to 20231010 and classified as critical. This issue affects some unknown processing of the file /sysmanage/importconf.php. The manipulation of the argument btn_file_renew leads to os command injection. 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-243059.

NOTE: The vendor was contacted early about this disclosure but did not respond in any way. Eine kritische Schwachstelle wurde in Byzoro Smart S85F Management Platform bis 20231010 gefunden. Hierbei geht es um eine nicht exakt ausgemachte Funktion der Datei /sysmanage/importconf.php. Durch die Manipulation des Arguments btn_file_renew mit unbekannten Daten kann eine os command injection-Schwachstelle ausgenutzt werden. Umgesetzt werden kann der Angriff über das Netzwerk. Der Exploit steht zur öffentlichen Verfügung.

Byzoro Affected
Smart S85F Management Platform
20231010
View vendor advisory (opens in new tab)
Published
21 Oct 2023
Exploitation Attempts Reported
21 Oct 2023
Attack vector
Remote
Complexity
Low
Privileges
Low
User interaction
None

CVE References

Exploitation evidence

Evidence of exploitation attempts

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploitation attempts observed in the wild

The Shadowserver

Recorded 21 Oct 2023

A trusted third party reported exploitation attempts.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
The Shadowserver First 2023-10-21 05:00 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
0
0
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

6.3 Medium

Potential damage if exploited. Separate from whether attackers are using it.

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

EPSS

9.3%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE-78

All CVSS Scores

CVSS v3.1 6.3 Medium

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

CVSS v3.0 6.3 Medium

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS v2.0 6.5 Medium

AV:N/AC:L/Au:S/C:P/I:P/A:P

Timeline

From disclosure to observed exploitation attempts

  1. 05:00 UTC

    CVE published

    Vulnerability disclosed publicly

  2. 05:00 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party report of exploitation attempts

  3. 15:16 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

Start 14-day Pro trial Read API docs
  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2023-5683

Sample API response 
{
  "cve_id": "CVE-2023-5683",
  "confidence": "High",
  "cvss_score": 6.3,
  "cvss_estimated": false,
  "epss_score": 0.09326,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}