CVE-2021-26880: Windows Storage Spaces Controller Elevation of Privilege Vulnerability

Published Mar 9, 2021
·
Updated

Storage Spaces Controller Elevation of Privilege Vulnerability

Affected Software

34 affected componentsFixes available
Microsoft Windows 10=20h2
Microsoft Windows 10=1607
Microsoft Windows 10=1803
Microsoft Windows 10=1809
Microsoft Windows 10=1909
Microsoft Windows 10=2004
Microsoft Windows Server 2016
Microsoft Windows Server 2016=20h2
Microsoft Windows Server 2016=1909
Microsoft Windows Server 2016=2004
Microsoft Windows Server 2019
Microsoft Windows Server 2016<10.0.14393.4283
10.0.14393.4283
Microsoft Windows 10=20H2
10.0.19043.867
Microsoft Windows 10=1607
10.0.14393.4283
Microsoft Windows Server=2004
10.0.19043.867
Microsoft Windows Server 2016<10.0.14393.4283
10.0.14393.4283
Microsoft Windows 10=1607
10.0.14393.4283
Microsoft Windows 10=20H2
10.0.19043.867
Microsoft Windows Server=20H2
10.0.19043.867
Microsoft Windows 10=2004
10.0.19043.867
Microsoft Windows Server=1909
10.0.18363.1440
Microsoft Windows 10=2004
10.0.19043.867
Microsoft Windows 10=2004
10.0.19043.867
Microsoft Windows 10=1909
10.0.18363.1440
Microsoft Windows 10=1909
10.0.18363.1440
Microsoft Windows 10=1909
10.0.18363.1440
Microsoft Windows Server 2019<10.0.17763.1817
10.0.17763.1817
Microsoft Windows 10=1809
10.0.17763.1817
Microsoft Windows 10=1803
10.0.17134.2087
Microsoft Windows Server 2019<10.0.17763.1817
10.0.17763.1817
Microsoft Windows 10=1809
10.0.17763.1817
Microsoft Windows 10=1803
10.0.17134.2087
Microsoft Windows 10=1809
10.0.17763.1817
Microsoft Windows 10=1803
10.0.17134.2087

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.14393.4283Patch KB5000803
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19043.867Patch KB5000802
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.18363.1440Patch KB5000808
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.17763.1817Patch KB5000822
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.17134.2087Patch KB5000809

Event History

Mar 9, 2021
CVE Published
via Microsoft·04:00 PM
Data Sourced
via Microsoft·04:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·04:00 PM
Affected Software
Updated
via Microsoft·04:00 PM
Description
Mar 11, 2021
CVE Published
via MITRE·03:41 PM
Data Sourced
via MITRE·03:41 PM
DescriptionSeverity
Data Sourced
via NVD·04:15 PM
RemedyDescriptionSeverityAffected Software

Frequently Asked Questions

1

Which systems are in scope?

The affected software list includes Microsoft Windows 10, Windows Server 2016, and Windows Server 2019.

2

What level of access does an attacker need?

Exploitation requires local access and low privileges. It does not require user interaction.

3

What could a successful attacker gain?

The CVSS vector rates confidentiality, integrity, and availability impact as high, with the vulnerability enabling elevation of privilege.

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