CVE-2022-21906Public exploit

Application-control bypass via undisclosed enforcement flaw

Published Jan 11, 2022 · Updated Jan 2, 2025

Security-feature bypass in Microsoft Windows allows context-dependent attackers to run code that a configured WDAC policy should block. Microsoft has not published the affected WDAC locus or the operation that mishandles untrusted content. Exploitation requires local execution and user interaction; the documented consequence is an integrity-only bypass of application-control policy.

CVSS severity5.5
Medium
EPSS probability1.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Security-feature bypass in Microsoft Windows allows context-dependent attackers to run code that a configured WDAC policy should block. Microsoft has not published the affected WDAC locus or the operation that mishandles untrusted content. Exploitation requires local execution and user interaction; the documented consequence is an integrity-only bypass of application-control policy.

The record

CVE
CVE-2022-21906
Published
Jan 11, 2022
Updated
Jan 2, 2025
Vendor
Microsoft
Product
Windows Server 2019
Classifications
T1204
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Jan 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.17763.0 <10.0.17763.2452

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.2452
Microsoft · Windows 10 Version 21H1version=10.0.0 <10.0.19043.1466
Microsoft · Windows 10 Version 1909version=10.0.0 <10.0.18363.2037
Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.434
Microsoft · Windows 10 Version 21H2version=10.0.19043.0 <10.0.19044.1466
Microsoft · Windows 10 Version 20H2version=10.0.0 <10.0.19042.1466
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.2452
Microsoft · Windows Server version 20H2version=10.0.0 <10.0.19042.1466
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.469
Microsoft · Windows 10 Version 1809version=10.0.0 <10.0.17763.2452; version=10.0.17763.0 <10.0.17763.2452

Published CVSS scores

5.5Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:P/A:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1204User Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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