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High 8.8

Windows PowerShellの脆弱性、ローカルでセキュリティ機能を回避される

CVE-2026-124226 First seen on SecPulse

Summary

Windows PowerShellで不要な権限による実行が行われる脆弱性で、権限を持つ攻撃者がローカルでセキュリティ機能を回避できます。CVSSは8.8です。Windows 10 Version 1607・1809・21H2・22H2、Windows 11 Version 23H2・24H2が影響を受け、各版の修正版が公開されています。Windows Updateで更新してください。

AI summary

Produced by SecPulse using an external AI model; it may contain mistakes. Check the original description and references below before acting on it.

Windows PowerShellで不要な権限による実行が行われる脆弱性で、権限を持つ攻撃者がローカルでセキュリティ機能を回避できます。CVSSは8.8です。Windows 10 Version 1607・1809・21H2・22H2、Windows 11 Version 23H2・24H2が影響を受け、各版の修正版が公開されています。Windows Updateで更新してください。

Affected packages

PackageAffected → Fixed
MicrosoftWindows 10 Version 1607
≥ 10.0.14393.0, < 10.0.14393.9688→ 10.0.14393.9688
MicrosoftWindows 10 Version 1809
≥ 10.0.17763.0, < 10.0.17763.9487→ 10.0.17763.9487
MicrosoftWindows 10 Version 21H2
≥ 10.0.19044.0, < 10.0.19044.7846→ 10.0.19044.7846
MicrosoftWindows 10 Version 22H2
≥ 10.0.19045.0, < 10.0.19045.7846→ 10.0.19045.7846
MicrosoftWindows 11 Version 23H2
≥ 10.0.22631.0, < 10.0.22631.7711→ 10.0.22631.7711
MicrosoftWindows 11 Version 24H2
≥ 10.0.26100.0, < 10.0.26100.9968→ 10.0.26100.9968
MicrosoftWindows 11 Version 25H2
≥ 10.0.26200.0, < 10.0.26200.9968→ 10.0.26200.9968
MicrosoftWindows 11 version 26H1
≥ 10.0.28000.0, < 10.0.28000.3501→ 10.0.28000.3501
MicrosoftWindows 11 Version 26H2
≥ 10.0.26300.0, < 10.0.26300.9968→ 10.0.26300.9968
MicrosoftWindows Server 2016
≥ 10.0.14393.0, < 10.0.14393.9688→ 10.0.14393.9688
MicrosoftWindows Server 2016 (Server Core installation)
≥ 10.0.14393.0, < 10.0.14393.9688→ 10.0.14393.9688
MicrosoftWindows Server 2019
≥ 10.0.17763.0, < 10.0.17763.9487→ 10.0.17763.9487
MicrosoftWindows Server 2019 (Server Core installation)
≥ 10.0.17763.0, < 10.0.17763.9487→ 10.0.17763.9487
MicrosoftWindows Server 2022
≥ 10.0.20348.0, < 10.0.20348.5870→ 10.0.20348.5870
MicrosoftWindows Server 2025
≥ 10.0.26100.0, < 10.0.26100.33812→ 10.0.26100.33812
MicrosoftWindows Server 2025 (Server Core installation)
≥ 10.0.26100.0, < 10.0.26100.33812→ 10.0.26100.33812
Original description The description as published by the source.

Execution with unnecessary privileges in Windows PowerShell allows an authorized attacker to bypass a security feature locally.

Source: Microsoft Security Response Center Blog NVD GitHub Advisory

References

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