CVE-2026-21222
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Sensitive Data Exposure via Log Injection in Windows Kernel

Publication date: 2026-02-10

Last updated on: 2026-02-11

Assigner: Microsoft Corporation

Description
Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.
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Meta Information
Published
2026-02-10
Last Modified
2026-02-11
Generated
2026-06-16
AI Q&A
2026-02-10
EPSS Evaluated
2026-06-15
NVD
CVE-2026-21222
EUVD
EUVD-2026-7311
Affected Vendors & Products
Showing 20 associated CPEs
Vendor Product Version / Range
microsoft windows_server_2012 r2
microsoft windows_10_1607 to 10.0.14393.8868 (exc)
microsoft windows_10_1607 to 10.0.14393.8868 (exc)
microsoft windows_10_1809 to 10.0.17763.8389 (exc)
microsoft windows_server_2016 to 10.0.14393.8868 (exc)
microsoft windows_server_2019 to 10.0.17763.8389 (exc)
microsoft windows_server_2022 to 10.0.20348.4711 (exc)
microsoft windows_server_2025 to 10.0.26100.32313 (exc)
microsoft windows_11_24h2 to 10.0.26100.7781 (exc)
microsoft windows_11_24h2 to 10.0.26100.7781 (exc)
microsoft windows_11_23h2 to 10.0.22631.6649 (exc)
microsoft windows_11_23h2 to 10.0.22631.6649 (exc)
microsoft windows_server_2022_23h2 to 10.0.25398.2149 (exc)
microsoft windows_10_22h2 to 10.0.19045.6937 (exc)
microsoft windows_10_22h2 to 10.0.19045.6937 (exc)
microsoft windows_10_22h2 to 10.0.19045.6937 (exc)
microsoft windows_10_21h2 to 10.0.19044.6937 (exc)
microsoft windows_10_21h2 to 10.0.19044.6937 (exc)
microsoft windows_10_21h2 to 10.0.19044.6937 (exc)
microsoft windows_10_1809 to 10.0.17763.8389 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-532 The product writes sensitive information to a log file.
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Executive Summary

This vulnerability involves the insertion of sensitive information into a log file within the Windows Kernel. It allows an authorized attacker to locally disclose sensitive information by accessing these logs.

Impact Analysis

The impact of this vulnerability is information disclosure. An authorized attacker with local access could obtain sensitive information from the Windows Kernel log files, potentially leading to exposure of confidential data.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

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