CISA KEV · Known exploitedHigh

CVE-2024-21351

Microsoft Windows

CVE-2024-21351 affects Microsoft Windows. Review the CVSS score, exploitation signals, affected versions, remediation status, and linked source material before making a change.

CVSS: 7.6
EPSS: 30.3%
CISA KEV: Listed
Published: 2024.02.14

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability30.3%

Technical severityCVSS 7.6

Vulnerability overview

CVE-2024-21351 affects Microsoft Windows. Review the CVSS score, exploitation signals, affected versions, remediation status, and linked source material before making a change.

Affected product and versions

Product: Microsoft Windows
Affected versions: 10.0.22631.0, 10.0.17763.0, 10.0.0, 10.0.20348.0, 10.0.19043.0, 10.0.22621.0, 10.0.19045.0, 10.0.10240.0, 10.0.14393.0, < 10.0.10240.20469, < 10.0.14393.6709, < 10.0.17763.5458, < 10.0.19044.4046, < 10.0.19045.4046, < 10.0.22000.2777, < 10.0.22621.3155, < 10.0.22631.3155, < 10.0.20348.2322, < 10.0.25398.709
Fixed versions: 10.0.10240.20469, 10.0.14393.6709, 10.0.17763.5458, 10.0.19044.4046, 10.0.19045.4046, 10.0.22000.2777, 10.0.22621.3155, 10.0.22631.3155, 10.0.20348.2322, 10.0.25398.709

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Due date: 2024.03.05

1
Identify
Confirm that Microsoft Windows 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:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L
CWE: CWE-94
KEV added: 2024.02.13
Ransomware use: 미확인