EUVD-2026-22613
GHSA-gw5p-hrxr-924m
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
6DescriptionCVE.org
Protection mechanism failure in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.
AnalysisAI
Windows Shell security feature bypass enables unauthenticated remote attackers to defeat protection mechanisms across all supported Windows client and server versions (Windows 10 1607 through Windows 11 26H1, Server 2012 through Server 2025) via network-based attack requiring user interaction. The CVSS 8.8 rating reflects complete compromise potential (high confidentiality, integrity, and availability impact) despite low attack complexity. Microsoft has released patches addressing this authentic
Technical ContextAI
This vulnerability affects the Windows Shell (explorer.exe and associated COM components), the core user interface layer responsible for file management, desktop rendering, and system interaction. The flaw represents a CWE-693 protection mechanism failure, where security controls intended to validate or restrict operations can be circumvented. Windows Shell implements numerous security boundaries including User Account Control (UAC), file type associations, and zone-based security models. The vulnerability spans the entire Windows ecosystem from legacy Windows Server 2012 (NT 6.2) through current Windows 11 26H1 and Server 2025 (NT 10.0.28000/26100), indicating the affected code exists in foundational Shell components unchanged across major Windows architecture generations. The network attack vector (AV:N) suggests exploitation occurs through Shell handling of remote resources, potentially via crafted links, files, or protocol handlers that bypass validation when accessed over network shares, web sources, or email attachments.
RemediationAI
Organizations should deploy Microsoft's January 2026 security updates immediately through established patch management processes. Fixed versions are Windows 10 1607 build 10.0.14393.9060 or later, Windows 10 1809 build 10.0.17763.8644 or later, Windows 10 21H2 build 10.0.19044.7184 or later, Windows 10 22H2 build 10.0.19045.7184 or later, Windows 11 22H3/23H2 build 10.0.22631.6936 or later, Windows 11 24H2 build 10.0.26100.32690 or later, Windows 11 25H2 build 10.0.26200.8246 or later, Windows 11 26H1 build 10.0.28000.1836 or later, Server 2012 build 6.2.9200.26026 or later, Server 2012 R2 build 6.3.9600.23132 or later, Server 2016 build 10.0.14393.9060 or later, Server 2019 build 10.0.17763.8644 or later, Server 2022 build 10.0.20348.5020 or later, Server 2022 23H2 build 10.0.25398.2274 or later, and Server 2025 build 10.0.26100.32690 or later. Apply updates via Windows Update, WSUS, Configuration Manager, or manual download from the Microsoft Update Catalog. Until patching completes, implement defense-in-depth controls including disabling SMB v1, enforcing email attachment blocking for suspicious file types, enabling Windows Defender Attack Surface Reduction rules, and heightening user awareness regarding untrusted network resources. Full remediation guidance available at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32225.
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Same weakness CWE-693 – Protection Mechanism Failure
View allSame technique Authentication Bypass
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External POC / Exploit Code
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