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CVE-2023-28229

7.0
HIGHCVSS v3.1 Base Score
8.64%
LOW RiskEPSS (93rd percentile)
KEV

Windows CNG Key Isolation Service Elevation of Privilege Vulnerability

Published: 4/11/2023
Modified: 10/28/2025
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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Microsoft Windows CNG Key Isolation Service Privilege Escalation Vulnerability

Vendor / Product:

Microsoft Windows CNG Key Isolation Service

Required Action:

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

Due Date: 10/25/2023(OVERDUE)
Added to KEV:

10/4/2023

Notes:

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-28229; https://nvd.nist.gov/vuln/detail/CVE-2023-28229

Vulnerability Summary

CVSS v3 Score

7HIGH

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

EPSS Score (Exploitation Probability)

8.64%LOW Exploitation Risk
93rd percentile

This vulnerability has a 8.64% probability of being exploited in the next 30 days, ranking higher than 93% of all scored CVEs.

CWE Classification

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