Rafael Pfister

CVE-2026-96951 Windows Shell Security Feature Bypass Vulnerability

8.8 KEV Actively exploited according to CISA

Analysis on rafaelpfister.ch

Vendor description

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.

Reference data

Vendor
Microsoft
Affected products
  • Outlook.com
  • Windows 10 Version 1607
  • Windows 10 Version 1809
  • Windows 10 Version 21H2
  • Windows 10 Version 22H2
  • Windows 11 version 23H2
  • Windows 11 Version 23H2
  • Windows 11 Version 24H2
  • Windows 11 Version 25H2
  • Windows 11 version 26H1
  • Windows 11 Version 26H2
  • Windows Server 2012 R2
  • Windows Server 2012 R2 (Server Core installation)
  • Windows Server 2016
  • Windows Server 2016 (Server Core installation)
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows Server 2022
  • Windows Server 2025
  • Windows Server 2025 (Server Core installation)
CVSS 3.1
8.8 (HIGH)
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
Weakness type
CWE-77: Command Injection
Published
October 13, 2026
In KEV catalog since
October 13, 2026
US federal deadline
October 16, 2026

Official sources

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