CVE-2026-96951
Improper neutralization of special elements used in a command ('command injection') in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.
- Score
- CVSS 3.1 8.8 High
- Status
- Analyzed - secure@microsoft.com
- Published
- 2026-10-13
- Last modified
- 2026-10-26
- Known exploited (CISA KEV)
- since 2026-10-13, action due 2026-10-16: 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.
- Weaknesses
- CWE-77
Affected products
- Outlook.com (Microsoft)
- Outlook Web (Microsoft)
- Windows 10 1607 (Microsoft)
- Windows 10 1809 (Microsoft)
- Windows 10 21H2 (Microsoft)
- Windows 10 21h2 (Microsoft)
- Windows 10 22H2 (Microsoft)
- Windows 10 22h2 (Microsoft)
- Windows 11 23H2 (Microsoft)
- Windows 11 23h2 (Microsoft)
- Windows 11 24H2 (Microsoft)
- Windows 11 24h2 (Microsoft)
- Windows 11 25H2 (Microsoft)
- Windows 11 25h2 (Microsoft)
- Windows 11 26H1 (Microsoft)
- Windows 11 26h1 (Microsoft)
- Windows 11 26h2 (Microsoft)
- Windows 11 Version 26h2 For Arm64-based Systems (Microsoft)
- Windows Server 2012 (Microsoft)
- Windows Server 2012 R2 (Microsoft)
- Windows Server 2016 (Microsoft)
- Windows Server 2019 (Microsoft)
- Windows Server 2022 (Microsoft)
- Windows Server 2025 (Microsoft)
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96951
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-96951
