Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2022-21919

Windows User Profile Service Elevation of Privilege Vulnerability

Microsoft / Windows 10 Version 1809 · affected before 10.0.17763.2452

Watch CVE-2022-21919 Browse KEV feed
Severity
CVSS 7.0 · High
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
2.4%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2022-21919 is Windows User Profile Service Elevation of Privilege Vulnerability affecting Microsoft Windows 10 Version 1809 and 25 other products.

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

Microsoft / Windows 10 Version 1809 affected before 10.0.17763.2452.

What should we do?

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

Overview

Windows User Profile Service Elevation of Privilege Vulnerability

Windows User Profile Service Elevation of Privilege Vulnerability

Microsoft Affected
Windows 10 Version 1809
Before 10.0.17763.2452
Microsoft Affected
Windows Server 2019
Before 10.0.17763.2452
Microsoft Affected
Windows Server 2019 (Server Core installation)
Before 10.0.17763.2452
Microsoft Affected
Windows 10 Version 1909
Before 10.0.18363.2037
Microsoft Affected
Windows 10 Version 21H1
Before 10.0.19043.1466
Microsoft Affected
Windows Server 2022
Before 10.0.20348.469
Microsoft Affected
Windows 10 Version 20H2
Before 10.0.19042.1466
Microsoft Affected
Windows Server version 20H2
Before 10.0.19042.1466
Microsoft Affected
Windows 11 version 21H2
Before 10.0.22000.434
Microsoft Affected
Windows 10 Version 21H2
Before 10.0.19043.1466
Microsoft Affected
Windows 10 Version 1507
Before 10.0.10240.19177
Microsoft Affected
Windows 10 Version 1607
Before 10.0.14393.4886
Microsoft Affected
Windows Server 2016
Before 10.0.14393.4886
Microsoft Affected
Windows Server 2016 (Server Core installation)
Before 10.0.14393.4886
Microsoft Affected
Windows 7
Before 6.1.7601.25829
Microsoft Affected
Windows 7 Service Pack 1
Before 6.1.7601.25829
Microsoft Affected
Windows 8.1
Before 6.3.9600.20246
Microsoft Affected
Windows Server 2008 Service Pack 2
Before 6.0.6003.21349
Microsoft Affected
Windows Server 2008 Service Pack 2 (Server Core installation)
Before 6.0.6003.21349
Microsoft Affected
Windows Server 2008 Service Pack 2
Before 6.0.6003.21349
Microsoft Affected
Windows Server 2008 R2 Service Pack 1
Before 6.1.7601.25829
Microsoft Affected
Windows Server 2008 R2 Service Pack 1 (Server Core installation)
Before 6.1.7601.25829
Microsoft Affected
Windows Server 2012
Before 6.2.9200.23584
Microsoft Affected
Windows Server 2012 (Server Core installation)
Before 6.2.9200.23584
Microsoft Affected
Windows Server 2012 R2
Before 6.3.9600.20246
Microsoft Affected
Windows Server 2012 R2 (Server Core installation)
Before 6.3.9600.20246
View vendor advisory (opens in new tab)
Published
11 Jan 2022
Exploitation Reported
25 Apr 2022
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None

Tags

windows microsoft cisa

CVE References

Exploitation evidence

Why Previdian 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 25 Apr 2022

A trusted third party reported exploitation.

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
CISA First 2022-04-25 00:00 UTC
Tenable Blog 2026-08-11 18:04 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

7.0 High

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

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

EPSS

2.4%

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

Weaknesses

Improper Link Resolution Before File Access ('Link Following') CWE-59

Recent mention · Tenable Blog

Microsoft's August 2026 Patch Tuesday addresses 398 CVEs (CVE-2026-68820)

42Critical355Important1Moderate0LowMicrosoft addresses 398 CVEs in the eighth Patch Tuesday of 2026, with three zero-days, including one that was exploited in the wild.Microsoft patched 398 CVEs in its August 2026 Patch Tuesday release, with 42 rated critical, 355 rated as...

Read full advisory

All CVSS Scores

CVSS v3.1 7.0 High

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

CVSS v2.0 6.9 Medium

AV:L/AC:M/Au:N/C:C/I:C/A:C

All Mentions

Recent mention · Tenable Blog

Microsoft's August 2026 Patch Tuesday addresses 398 CVEs (CVE-2026-68820)

Tenable Blog · 11 Aug 2026

42Critical355Important1Moderate0LowMicrosoft addresses 398 CVEs in the eighth Patch Tuesday of 2026, with three zero-days, including one that was exploited in the wild.Microsoft patched 398 CVEs in its August 2026 Patch Tuesday release, with 42 rated critical, 355 rated as important and one rated as moderate. Our counts omitted two CVEs assigned by MITRE; CVE-2026-6726 and CVE-2026-6727.This month’s update includes patches for:.NET.NET Core.NET FrameworkAMD ZenActive Directory Certificate Services (AD CS)Application Information ServicesAzure Active DirectoryAzure CycleCloudAzure Monitor...

Recent mention · Tenable Blog

Microsoft's August 2026 Patch Tuesday Addresses 398 CVEs (CVE-2026-68820)

Tenable Blog · 11 Aug 2026

42Critical355Important1Moderate0LowMicrosoft addresses 398 CVEs in the eighth Patch Tuesday of 2026, with three zero-days, including one that was exploited in the wild.Microsoft patched 398 CVEs in its August 2026 Patch Tuesday release, with 42 rated critical, 355 rated as important and one rated as moderate. Our counts omitted two CVEs assigned by MITRE; CVE-2026-6726 and CVE-2026-6727.This month’s update includes patches for:.NET.NET Core.NET FrameworkAMD ZenActive Directory Certificate Services (AD CS)Application Information ServicesAzure Active DirectoryAzure CycleCloudAzure Monitor...

Timeline

From disclosure to observed exploitation

  1. 18:04 UTC

    KEV confirmed by Tenable Blog

    Exploitation attested by an external source

  2. 00:00 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  3. 20:23 UTC

    CVE published

    Vulnerability disclosed publicly

  4. 00:00 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-2022-21919

Sample API response 
{
  "cve_id": "CVE-2022-21919",
  "confidence": "Confirmed",
  "cvss_score": 7.0,
  "cvss_estimated": false,
  "epss_score": 0.02434,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}