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CVE-2026-96951

Windows Shell Security Feature Bypass Vulnerability

Published
Last modified
published
Listed in CISA KEV
Fix
Fixed in 154.0.4258.62, 20260925.100, 10.0.14393.9612, 10.0.17763.9376, 10.0.19044.7807, and 9 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: active
  • Automatable: no
  • Technical impact: total

Summary

Microsoft Windows Shell is affected by this vulnerability, which allows an attacker to get around a built-in security protection over a network without authorization. Because the flaw comes from improper handling of special characters in commands, it can let an attacker bypass protections that would otherwise block or warn about potentially harmful actions.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Read the original 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.

Timeline

  1. CISA SSVC assessment

    Exploitation: active · Automatable: no · Technical impact: total

  2. Added to CISA KEV

    CISA has evidence of exploitation in the wild

  3. CVE published
  4. CISA remediation deadline

    Due date for US federal agencies to patch

  5. Record last updated

Affected versions

  • Microsoft Microsoft Edge (Chromium-based)

    From 1.0.0.0 · fixed in 154.0.4258.62

  • Microsoft Outlook.com

    From 1.0.0 · fixed in 20260925.100

  • Microsoft Windows 10 Version 1607

    From 10.0.14393.0 · fixed in 10.0.14393.9612

  • Microsoft Windows 10 Version 1809

    From 10.0.17763.0 · fixed in 10.0.17763.9376

  • Microsoft Windows 10 Version 21H2

    From 10.0.19044.0 · fixed in 10.0.19044.7807

  • Microsoft Windows 10 Version 22H2

    From 10.0.19045.0 · fixed in 10.0.19045.7807

  • Microsoft Windows 11 version 23H2

    From 10.0.22631.0 · fixed in 10.0.22631.7652

  • Microsoft Windows 11 Version 23H2

    From 10.0.22631.0 · fixed in 10.0.22631.7652

  • Microsoft Windows 11 Version 24H2

    From 10.0.26100.0 · fixed in 10.0.26100.9711

  • Microsoft Windows 11 Version 25H2

    From 10.0.26200.0 · fixed in 10.0.26200.9711

  • Microsoft Windows 11 version 26H1

    From 10.0.28000.0 · fixed in 10.0.28000.3231

  • Microsoft Windows 11 Version 26H2

    From 10.0.26300.0 · fixed in 10.0.26300.9711

  • Microsoft Windows Server 2012 R2

    From 6.3.9600.0 · fixed in 6.3.9600.23470

  • Microsoft Windows Server 2012 R2 (Server Core installation)

    From 6.3.9600.0 · fixed in 6.3.9600.23470

  • Microsoft Windows Server 2016

    From 10.0.14393.0 · fixed in 10.0.14393.9612

  • Microsoft Windows Server 2016 (Server Core installation)

    From 10.0.14393.0 · fixed in 10.0.14393.9612

  • Microsoft Windows Server 2019

    From 10.0.17763.0 · fixed in 10.0.17763.9376

  • Microsoft Windows Server 2019 (Server Core installation)

    From 10.0.17763.0 · fixed in 10.0.17763.9376

  • Microsoft Windows Server 2022

    From 10.0.20348.0 · fixed in 10.0.20348.5761

  • Microsoft Windows Server 2025

    From 10.0.26100.0 · fixed in 10.0.26100.33650

  • Microsoft Windows Server 2025 (Server Core installation)

    From 10.0.26100.0 · fixed in 10.0.26100.33650

References 1

msrc.microsoft.com