What’s Vulnerable › Vulnerabilities

CVE-2026-32202: Microsoft Windows Protection Mechanism Failure Vulnerability

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2026-04-28
• EPSS: 70.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-14 · updated 2026-10-26
• Weakness: CWE-693

Description

Protection mechanism failure in Windows Shell allows an unauthorized attacker to perform spoofing over a network.

Affected products

• Microsoft Windows 10 1607: before 10.0.14393.9060 — fixed in 10.0.14393.9060
• Microsoft Windows 10: before 10.0.17763.8644 — fixed in 10.0.17763.8644
• Microsoft Windows 10: before 10.0.19044.7184 — fixed in 10.0.19044.7184
• Microsoft Windows 10: before 10.0.19045.7184 — fixed in 10.0.19045.7184
• Microsoft Windows 11: before 10.0.22631.6936 — fixed in 10.0.22631.6936
• Microsoft Windows 11: before 10.0.26100.8246 — fixed in 10.0.26100.8246
• Microsoft Windows 11 25H2: before 10.0.26200.8246 — fixed in 10.0.26200.8246
• Microsoft Windows 11 version 26H1: before 10.0.28000.1836 — fixed in 10.0.28000.1836
• Microsoft Windows Server 2012: r2
• Microsoft Windows Server 2016: before 10.0.14393.9060 — fixed in 10.0.14393.9060
• Microsoft Windows Server 2019: before 10.0.17763.8644 — fixed in 10.0.17763.8644
• Microsoft Windows Server 2022: before 10.0.20348.5020 — fixed in 10.0.20348.5020
• Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): before 10.0.25398.2274 — fixed in 10.0.25398.2274
• Microsoft Windows Server 2025: before 10.0.26100.32690 — fixed in 10.0.26100.32690

How to fix

Upgrade to a fixed version: Microsoft Windows 10 1607 10.0.14393.9060; Microsoft Windows 10 10.0.17763.8644; Microsoft Windows 10 10.0.19044.7184; Microsoft Windows 10 10.0.19045.7184; Microsoft Windows 11 10.0.22631.6936; Microsoft Windows 11 10.0.26100.8246; Microsoft Windows 11 25H2 10.0.26200.8246; Microsoft Windows 11 version 26H1 10.0.28000.1836; Microsoft Windows Server 2016 10.0.14393.9060; Microsoft Windows Server 2019 10.0.17763.8644; Microsoft Windows Server 2022 10.0.20348.5020; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.2274. Check the vendor advisory for mitigations.

In the news

• Microsoft’s October 2026 Patch Tuesday addresses 1407 CVEs (CVE-2026-96951)

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32202
• https://www.vicarius.io/vsociety/posts/cve-2026-32202-detection-script-spoofing-vulnerability-in-windows-shell
• https://www.vicarius.io/vsociety/posts/cve-2026-32202-mitigation-script-spoofing-vulnerability-in-windows-shell
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-32202

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