Review reviewHigh

CVE-2024-21346

Microsoft Windows 11 version 21H2, Windows 11 version 22H2, Windows 11 version 22H3

CVE-2024-21346 affects Microsoft Windows 11 version 21H2, Windows 11 version 22H2, Windows 11 version 22H3. Review the CVSS score, exploitation signals, affected versions, remediation status, and linked source material before making a change.

CVSS: 7.8
EPSS: 4.12%
CISA KEV: Not listed
Published: 2024.02.14

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability4.12%

Technical severityCVSS 7.8

Vulnerability overview

Affected product and versions

Product: Microsoft Windows 11 version 21H2, Windows 11 version 22H2, Windows 11 version 22H3
Affected versions: >= 10.0.0 < 10.0.22000.2777, >= 10.0.22621.0 < 10.0.22621.3155, >= 10.0.22631.0 < 10.0.22631.3155, >= 10.0.25398.0 < 10.0.25398.709, < 10.0.22000.2777, < 10.0.22621.3155, < 10.0.22631.3155, < 10.0.25398.709
Fixed versions: 10.0.22000.2777, 10.0.22621.3155, 10.0.22631.3155, 10.0.25398.709

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Microsoft Windows 11 version 21H2, Windows 11 version 22H2, Windows 11 version 22H3 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-822