Microsoft Windows Command Injection Vulnerability
Description
Microsoft Windows Shell contains a command injection vulnerability that allows an unauthorized attacker to bypass a security feature over a network.
What to do
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
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Details
- Vendor
- Microsoft
- Product
- Windows
- CVE
- CVE-2026-96951
- Affected versions
- Windows 10 1607: before 10.0.14393.9612 — fixed in 10.0.14393.9612
Windows 10 1809: before 10.0.17763.9376 — fixed in 10.0.17763.9376
Windows 10: before 10.0.19044.7807 — fixed in 10.0.19044.7807
Windows 10: before 10.0.19045.7807 — fixed in 10.0.19045.7807
Windows 11: before 10.0.22631.7652 — fixed in 10.0.22631.7652
Windows 11: before 10.0.26100.9711 — fixed in 10.0.26100.9711
Windows 11: before 10.0.26200.9711 — fixed in 10.0.26200.9711
Windows 11: before 10.0.28000.3231 — fixed in 10.0.28000.3231
Windows 11: before 10.0.26300.9711 — fixed in 10.0.26300.9711
Windows Server: Windows Server 2012 R2 (build not specified)
Windows Server 2016: before 10.0.14393.9612 — fixed in 10.0.14393.9612
Windows Server 2019: before 10.0.17763.9376 — fixed in 10.0.17763.9376
Windows Server 2022: before 10.0.20348.5761 — fixed in 10.0.20348.5761
Windows Server 2025: before 10.0.26100.33650 — fixed in 10.0.26100.33650 (from the advisory and NVD; check the exact builds in the official advisory) - CVSS score
- 8.8
- Actively exploited
- Yes, listed in the CISA Known Exploited Vulnerabilities catalog
- CISA due date
- October 16, 2026 (deadline for US federal agencies: a good benchmark for you too)
- Source
- CISA KEV – original advisory
- Published
- October 13, 2026
The description and the recommended action are quoted from the public advisory; severity, exploitation status and affected versions are compiled automatically from public sources and may contain errors. The vendor's original advisory prevails: check it before taking action. This information is provided without warranty and does not replace a professional assessment.