KEV Intelligence

Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2022-24521

Windows 10 Version 1809

Microsoft / Windows 10 Version 1809 · affected before 10.0.17763.2803

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Severity
CVSS 7.8 · High
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
7.3%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2022-24521 is a vulnerability affecting Microsoft Windows 10 Version 1809 and 25 other products. Windows Common Log File System Driver Elevation of Privilege Vulnerability

Is it exploited?

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

Who is affected?

Microsoft / Windows 10 Version 1809 affected before 10.0.17763.2803.

What should we do?

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

Overview

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Vendor Product Affected Status
Microsoft Windows 10 Version 1809 Before 10.0.17763.2803 Affected
Microsoft Windows 10 Version 1809 Before 10.0.17763.2803 Affected
Microsoft Windows Server 2019 Before 10.0.17763.2803 Affected
Microsoft Windows Server 2019 (Server Core installation) Before 10.0.17763.2803 Affected
Microsoft Windows 10 Version 1909 Before 10.0.18363.2212 Affected
Microsoft Windows 10 Version 21H1 Before 10.0.19043.1645 Affected
Microsoft Windows Server 2022 Before 10.0.20348.643 Affected
Microsoft Windows 10 Version 20H2 Before 10.0.19042.1645 Affected
Microsoft Windows Server version 20H2 Before 10.0.19042.1645 Affected
Microsoft Windows 11 version 21H2 Before 10.0.22000.613 Affected
Microsoft Windows 10 Version 21H2 Before 10.0.19044.1645 Affected
Microsoft Windows 10 Version 1507 Before 10.0.10240.19265 Affected
Microsoft Windows 10 Version 1607 Before 10.0.14393.5066 Affected
Microsoft Windows Server 2016 Before 10.0.14393.5066 Affected
Microsoft Windows Server 2016 (Server Core installation) Before 10.0.14393.5066 Affected
Microsoft Windows 7 Before 6.1.7601.25924 Affected
Microsoft Windows 7 Service Pack 1 Before 6.1.7601.25924 Affected
Microsoft Windows 8.1 Before 6.3.9600.20337 Affected
Microsoft Windows Server 2008 Service Pack 2 Before 6.0.6003.21446 Affected
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) Before 6.0.6003.21446 Affected
Microsoft Windows Server 2008 Service Pack 2 Before 6.0.6003.21446 Affected
Microsoft Windows Server 2008 R2 Service Pack 1 Before 6.1.7601.25924 Affected
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) Before 6.1.7601.25924 Affected
Microsoft Windows Server 2012 Before 6.2.9200.23679 Affected
Microsoft Windows Server 2012 (Server Core installation) Before 6.2.9200.23679 Affected
View vendor advisory (opens in new tab)
Published
15 Apr 2022
Exploitation Reported
13 Apr 2022
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None

Tags

windows malware cisa ransomware microsoft

CVE References

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

CISA

Recorded 13 Apr 2022

Independent exploitation attestation added to the KEV Intelligence record.

Used in malware

CISA

Recorded 13 Apr 2022

Malware families have been linked to exploitation of this CVE.

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
CISA First 2022-04-13 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

7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

EPSS

7.3%

Weaknesses

Out-of-bounds Write CWE-787

Timeline

From disclosure to observed exploitation

  1. CVE published

    Vulnerability disclosed publicly

  2. Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  3. First public exploitation report

    Exploit observed in malware

  4. 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.

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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-2022-24521

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2022-24521",
  "confidence": "Confirmed",
  "cvss_score": 7.8,
  "cvss_estimated": false,
  "epss_score": 0.07304,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

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