Actively exploited · Published Apr 14, 2026 · Assigned by microsoft
CVE-2026-32202Windows Shell Spoofing Vulnerability
Medium 4.3 Exploited
In plain English
A medium-severity security flaw in Windows 10 Version 1607 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on April 28, 2026). The chance it is exploited in the next 30 days is estimated at 70.9% (higher than 99.4% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
CISA guidance
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Federal agencies must remediate by May 12, 2026.
Official description
Protection mechanism failure in Windows Shell allows an unauthorized attacker to perform spoofing over a network.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | dotnet10-runtime | 10.0.6-r0 | ALPINE-CVE-2026-32202 |
| Alpine:v3.24 | dotnet10-runtime | 10.0.6-r0 | ALPINE-CVE-2026-32202 |
| Alpine:v3.20 | dotnet8-runtime | 8.0.26-r0 | ALPINE-CVE-2026-32202 |
| Alpine:v3.21 | dotnet8-runtime | 8.0.26-r0 | ALPINE-CVE-2026-32202 |
| Alpine:v3.22 | dotnet8-runtime | 8.0.26-r0 | ALPINE-CVE-2026-32202 |
| Alpine:v3.23 | dotnet8-runtime | 8.0.26-r0 | ALPINE-CVE-2026-32202 |
| Alpine:v3.24 | dotnet8-runtime | 8.0.26-r0 | ALPINE-CVE-2026-32202 |
| Alpine:v3.21 | dotnet9-runtime | 9.0.15-r0 | ALPINE-CVE-2026-32202 |
| Alpine:v3.22 | dotnet9-runtime | 9.0.15-r0 | ALPINE-CVE-2026-32202 |
| Alpine:v3.23 | dotnet9-runtime | 9.0.15-r0 | ALPINE-CVE-2026-32202 |
| Alpine:v3.24 | dotnet9-runtime | 9.0.15-r0 | ALPINE-CVE-2026-32202 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – before 10.0.14393.9339 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – before 10.0.17763.9020 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 – before 10.0.19044.7548 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – before 10.0.19045.7548 |
| Microsoft | Windows 11 version 23H2 | 10.0.22631.0 – before 10.0.22631.7376 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – before 10.0.22631.7376 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – before 10.0.26100.8875 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 – before 10.0.26200.8875 |
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0 – before 10.0.28000.2525 |
| Microsoft | Windows Server 2012 | 6.2.9200.0 – before 6.2.9200.26226 |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0 – before 6.2.9200.26226 |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 – before 6.3.9600.23291 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 – before 6.3.9600.23291 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 – before 10.0.14393.9339 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – before 10.0.14393.9339 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – before 10.0.17763.9020 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – before 10.0.17763.9020 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – before 10.0.20348.5386 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – before 10.0.26100.33158 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – before 10.0.26100.33158 |
Weakness: CWE-693 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C
References
- Windows Shell Spoofing Vulnerability vendor-advisory, patch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-32202 government-resource
- 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