CVE-2026-32177: .NET Elevation of Privilege Vulnerability

Published May 12, 2026
·
Updated

.NET Elevation of Privilege Vulnerability

Other sources

Heap-based buffer overflow in .NET allows an unauthorized attacker to elevate privileges locally.

— Microsoft

Affected Software

71 affected componentsFixes available
Microsoft .NET Framework=3.5, =4.8.1
Patch available
Microsoft .NET Framework=3.5, =4.8.1
Patch available
Microsoft .NET Framework=3.5, =4.8.1
Patch available
Microsoft .NET Framework=3.5, =4.8
Patch available
Microsoft Visual Studio 2017 (includes 15.0 - 15.8)=15.9
Patch available
Microsoft Visual Studio 2019 (includes 16.0 - 16.10)=16.11
Patch available
Microsoft .NET Framework=3.5, =4.7.2
Patch available
Microsoft .NET Framework=3.5, =4.8
Patch available
Microsoft .NET Framework=4.8
Patch available
Microsoft Visual Studio 2022>=17.12.0<17.12.20
Microsoft Visual Studio 2022>=17.14.0<17.14.32
Microsoft Visual Studio 2026>=18.5.0<18.5.3
All of the following
Microsoft .NET Framework=4.8
Any of the following
Microsoft Windows 10 1607
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016
All of the following
Any of the following
Microsoft .NET Framework=4.6.2
Microsoft .NET Framework=4.7
Microsoft .NET Framework=4.7.1
Microsoft .NET Framework=4.7.2
Any of the following
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
All of the following
Any of the following
Microsoft .NET Framework=3.5
Microsoft .NET Framework=4.8.1
Any of the following
Microsoft Windows 10 21h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows 11 22h2
Microsoft Windows 11 23h2
Microsoft Windows 11 24h2
Microsoft Windows 11 24h2
Microsoft Windows 11 25h2
Microsoft Windows 11 25h2
Microsoft Windows 11 26h1
Microsoft Windows 11 26h1
Microsoft Windows Server 2022
Microsoft Windows Server 2025
All of the following
Any of the following
Microsoft .NET Framework=3.5
Microsoft .NET Framework=4.8
Any of the following
Microsoft Windows 10 1809
Microsoft Windows 10 1809
Microsoft Windows 10 21h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows Server 2019
Microsoft Windows Server 2025
All of the following
Microsoft .NET Framework=3.5
Any of the following
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
All of the following
Any of the following
Microsoft .NET>=8.0.0<8.0.27
Microsoft .NET>=9.0.0<9.0.16
Microsoft .NET>=10.0.0<10.0.8
Microsoft Windows
Microsoft .NET Framework=3.5, =4.7.2
4.8.9334.0 and 4.8.4802.0
Microsoft .NET Framework=3.5, =4.8.1
4.8.9334.0 and 4.8.4802.0
Microsoft .NET Framework=3.5, =4.8.1
4.8.9334.0 and 4.8.4802.0
Microsoft .NET Framework=3.5, =4.8.1
4.8.9334.0 and 4.8.4802.0
Microsoft .NET Framework=3.5, =4.8
4.8.9334.0 and 4.8.4802.0
Microsoft .NET Framework=4.8
4.8.9334.0 and 4.8.4802.0
Microsoft .NET Framework=3.5
4.8.9334.0 and 4.8.4802.0
Microsoft .NET Framework=3.5
4.8.9334.0 and 4.8.4802.0
Microsoft .NET Framework=4.6.2, =4.7, =4.7.1, =4.7.2
4.8.9334.0 and 4.8.4802.0
Microsoft .NET Framework=4.6.2, =4.7, =4.7.1, =4.7.2
4.8.9334.0 and 4.8.4802.0
Microsoft Visual Studio 2026=18.5
18.5.3
Microsoft .NET 9.0 installed on Windows<9.0.16
9.0.16
Microsoft .NET Framework=4.8
4.8.9334.0 and 4.8.4802.0
Microsoft Visual Studio 2022=17.14
17.14.32
Microsoft Visual Studio 2022=17.12
17.12.20
Microsoft .NET 10.0 installed on Windows<10.0.8
10.0.8
Microsoft .NET 8.0 installed on Windows<8.0.27
8.0.27

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 4.8.9334.0 and 4.8.4802.0Patch KB5087061
  2. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087055
  3. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087051
  4. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087053
  5. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087054
  6. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087066
  7. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087064
  8. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087065
  9. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087048
  10. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087049
  11. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087058
  12. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087063
  13. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087059
  14. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087068
  15. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087062
  16. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087069
  17. Upgrade

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

    Fixed in 18.5.3
  18. Upgrade

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

    Fixed in 9.0.16Patch KB5093448
  19. Upgrade

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

    Fixed in 4.8.9334.0 and 4.8.4802.0Patch KB5087067
  20. Upgrade

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

    Fixed in 17.14.32
  21. Upgrade

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

    Fixed in 17.12.20
  22. Upgrade

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

    Fixed in 10.0.8Patch KB5093446
  23. Upgrade

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

    Fixed in 8.0.27Patch KB5093447

Event History

May 12, 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
DescriptionWeakness
Updated
via Microsoft·02:00 PM
WeaknessAffected Software
CVE Published
via MITRE·04:58 PM
Data Sourced
via MITRE·04:58 PM
DescriptionSeverity
Data Sourced
via Red Hat·06:05 PM
DescriptionSeverityAffected Software
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-2026-32177?

CVE-2026-32177 is identified as a high-severity vulnerability due to its potential to allow unauthorized privilege escalation.

2

How do I fix CVE-2026-32177?

To fix CVE-2026-32177, you should apply the latest security updates provided by Microsoft for the affected .NET Framework versions.

3

Which versions of .NET Framework are affected by CVE-2026-32177?

CVE-2026-32177 affects .NET Framework versions 3.5 and 4.8.1.

4

Can CVE-2026-32177 be exploited remotely?

CVE-2026-32177 requires local access for exploitation, meaning an attacker must have physical access to the vulnerable system.

5

What type of vulnerability is CVE-2026-32177 classified as?

CVE-2026-32177 is classified as a heap-based buffer overflow elevation of privilege vulnerability.

Company

Resources

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