Is CVE-2024-12856 actively exploited?

Yes. KEV Intelligence tracks CVE-2024-12856 as a known exploited vulnerability. Confidence is high.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2024-12856. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2024-12856 affects Four-Faith F3x24, F3x36. Reported affected versions include 2.0.

No. CVE-2024-12856 is not currently listed in CISA KEV.

Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2024-12856

Four-Faith Industrial Router adjust_sys_time OS Command Injection

Four-Faith / F3x24 · 2.0

View live feed Monitor via API Watch CVE

Severity: CVSS 7.2 · High
Confidence: High
Exploit status: Exploited in the wild
EPSS: 82.2%
First observed: —
Last observed: —

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2024-12856 is Four-Faith Industrial Router adjust_sys_time OS Command Injection. The Four-Faith router models F3x24 and F3x36 are affected by an operating system (OS) command injection vulnerability. At least...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is high.

Who is affected?

Four-Faith / F3x24 2.0.

What should we do?

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

Overview

The Four-Faith router models F3x24 and F3x36 are affected by an operating system (OS) command injection vulnerability

The Four-Faith router models F3x24 and F3x36 are affected by an operating system (OS) command injection vulnerability. At least firmware version 2.0 allows authenticated and remote attackers to execute arbitrary OS commands over HTTP when modifying the system time via apply.cgi.

Additionally, this firmware version has default credentials which, if not changed, would effectively change this vulnerability into an unauthenticated and remote OS command execution issue.

Vendor Product Affected Status

Four-Faith F3x24 2.0 Affected

Four-Faith F3x36 2.0 Affected

View vendor advisory

Published: 27 Dec 2024
Exploitation Reported: 03 Nov 2025
Attack vector: Remote
Complexity: Low
Privileges: High
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2024-12856
Third-Party Advisory — vulncheck.com vulncheck.com · Third-Party Advisory https://vulncheck.com/advisories/four-faith-time
Exploit — vulncheck.com vulncheck.com · Exploit https://vulncheck.com/blog/four-faith-cve-2024-12856
Exploit — ducklingstudio.blog.fc2.com ducklingstudio.blog.fc2.com · Exploit https://ducklingstudio.blog.fc2.com/blog-entry-392.html

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

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

Exploited in the wild

The Shadowserver

Recorded 03 Nov 2025

Independent exploitation attestation added to the KEV Intelligence record.

Known exploited vulnerability sources

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

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Source	Added
The Shadowserver First	2025-11-03 00:00 UTC

Detection

Operational artifacts and observed signals

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

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No KEV Intelligence 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

7.2 High

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

EPSS

82.2%

Weaknesses

Use of Default Credentials CWE-1392 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE-78

Timeline

From disclosure to observed exploitation

03 Nov 2025
Added to KEV Intelligence KEV Feed

High-confidence, third-party attested exploitation
27 Dec 2024
CVE published

Vulnerability disclosed publicly
20 Dec 2024
CVE ID reserved

Identifier reserved by the CNA

Pro API

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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-2024-12856

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2024-12856",
  "confidence": "High",
  "cvss_score": 7.2,
  "cvss_estimated": false,
  "epss_score": 0.82192,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

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