CVE-2026-32078: Windows Projected File System Elevation of Privilege Vulnerability

Published Apr 14, 2026
·
Updated

Use after free in Windows Projected File System allows an authorized attacker to elevate privileges locally.

Other sources

Windows Projected File System Elevation of Privilege Vulnerability

— Microsoft

Affected Software

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

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 10.0.28000.1836Patch KB5083768
  2. Upgrade

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

    Fixed in 10.0.26100.32690Patch KB5082063
  3. Upgrade

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

    Fixed in 10.0.26200.8246Patch KB5083769
  4. Upgrade

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

    Fixed in 10.0.26100.8246Patch KB5083769
  5. Upgrade

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

    Fixed in 10.0.22631.6936Patch KB5082052
  6. Upgrade

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

    Fixed in 10.0.25398.2274Patch KB5082060
  7. Upgrade

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

    Fixed in 10.0.19045.7184Patch KB5082200
  8. Upgrade

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

    Fixed in 10.0.19044.7184Patch KB5082200
  9. Upgrade

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

    Fixed in 10.0.17763.8644Patch KB5082123
  10. Upgrade

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

    Fixed in 10.0.20348.5020Patch KB5082142

Event History

Apr 14, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·04:58 PM
Data Sourced
via MITRE·04:58 PM
DescriptionSeverity
Data Sourced
via NVD·06:17 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2026-32078?

CVE-2026-32078 has been rated with a high severity level due to its potential for local privilege escalation.

2

How do I fix CVE-2026-32078?

To fix CVE-2026-32078, you should apply the latest security updates provided by Microsoft for the affected Windows operating systems.

3

What does CVE-2026-32078 exploit?

CVE-2026-32078 exploits a use-after-free vulnerability in the Windows Projected File System.

4

Who is affected by CVE-2026-32078?

CVE-2026-32078 affects various versions of Microsoft Windows, including Windows 10, Windows 11, and Windows Server products.

5

What are the potential consequences of CVE-2026-32078?

The potential consequences of CVE-2026-32078 include unauthorized elevation of privileges by an attacker, which could lead to system compromise.

Contact

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