CVE-2026-26170: PowerShell Elevation of Privilege Vulnerability

Published Apr 14, 2026
·
Updated

Improper input validation in Microsoft PowerShell allows an authorized attacker to elevate privileges locally.

Other sources

PowerShell Elevation of Privilege Vulnerability

Microsoft

Affected Software

51 affected componentsFixes available
Microsoft PowerShell
Microsoft Windows 11=23H2
Microsoft Windows Server 2022, 23H2 Edition
Microsoft Windows 10=22H2
Microsoft Windows 11=25H2
Microsoft Windows 11=23H2
Microsoft Windows 10=22H2
Microsoft Windows 10=22H2
Microsoft Windows 10=21H2
Microsoft Windows Server 2025
Microsoft Windows 10=21H2
Microsoft Windows 10=21H2
Microsoft Windows Server 2022
Microsoft Windows Server 2019
Microsoft Windows Server 2022
Microsoft Windows Server 2019
Microsoft Windows 11=26H1
Microsoft Windows 11=26H1
Microsoft Windows 10=1809
Microsoft Windows 10=1809
Microsoft Windows Server 2016
Microsoft Windows Server 2016
Microsoft Windows Server 2025
Microsoft Windows 10=1607
Microsoft Windows 10=1607
Microsoft Windows 11=24H2
Microsoft Windows 11=24H2
Microsoft Windows 11=25H2
Microsoft Windows 10 1607<10.0.14393.9060
Microsoft Windows 10 1607<10.0.14393.9060
Microsoft Windows 10 1809<10.0.17763.8644
Microsoft Windows 10 1809<10.0.17763.8644
Microsoft Windows 10 21h2<10.0.19044.7184
Microsoft Windows 10 21h2<10.0.19044.7184
Microsoft Windows 10 21h2<10.0.19044.7184
Microsoft Windows 10 22h2<10.0.19045.7184
Microsoft Windows 10 22h2<10.0.19045.7184
Microsoft Windows 10 22h2<10.0.19045.7184
Microsoft Windows 11 23h2<10.0.22631.6936
Microsoft Windows 11 23h2<10.0.22631.6936
Microsoft Windows 11 24h2<10.0.26100.8246
Microsoft Windows 11 24h2<10.0.26100.8246
Microsoft Windows 11 25h2<10.0.26200.8246
Microsoft Windows 11 25h2<10.0.26200.8246
Microsoft Windows 11 26h1<10.0.28000.1836
Microsoft Windows 11 26h1<10.0.28000.1836
Microsoft Windows Server 2016<10.0.14393.9060
Microsoft Windows Server 2019<10.0.17763.8644
Microsoft Windows Server 2022<10.0.20348.5020
Microsoft Windows Server 2022 23h2<10.0.25398.2274
Microsoft Windows Server 2025<10.0.26100.32690

Event History

Apr 14, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·04:57 PM
Data Sourced
via MITRE·04:57 PM
DescriptionSeverity
Data Sourced
via NVD·06:16 PM
DescriptionSeverityWeaknessAffected Software
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2026-26170?

CVE-2026-26170 has been classified with a high severity rating due to its potential for privilege escalation.

2

How do I fix CVE-2026-26170?

To fix CVE-2026-26170, install the latest security updates provided by Microsoft for affected versions of PowerShell and Windows.

3

What products are affected by CVE-2026-26170?

CVE-2026-26170 affects multiple versions of Microsoft PowerShell and various Windows operating systems, including Windows 10 and Windows 11.

4

Can CVE-2026-26170 be exploited remotely?

CVE-2026-26170 requires local access for exploitation, making it less likely to be targeted remotely.

5

Is there a public exploit available for CVE-2026-26170?

Currently, there is no known public exploit for CVE-2026-26170, but the vulnerability poses significant risk if unaddressed.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203