CVE-2026-65810: .NET Framework Elevation of Privilege Vulnerability

Published Aug 11, 2026
·
Updated

.NET Framework Elevation of Privilege Vulnerability

Other sources

Relative path traversal in .NET Framework allows an unauthorized attacker to elevate privileges locally.

— Microsoft

Affected Software

79 affected componentsFixes available
Microsoft .NET Framework=3.5, =4.8
2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0
Microsoft .NET Framework=3.5
2.0.50727.8984 & 3.0.30729.8980
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9183 & 3.0.30729.9169 & 4.8.9344.0
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0
Microsoft .NET Framework=3.5
2.0.50727.8984 & 3.0.30729.8980
Microsoft .NET Framework=3.5, =4.6.2, =4.7, =4.7.1, =4.7.2
2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0
Microsoft .NET Framework=3.5, =4.7.2
2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0
Microsoft .NET Framework=3.5, =4.8
2.0.50727.9183 & 3.0.30729.9169 & 4.8.4805.0
Microsoft .NET Framework=3.5, =4.8.1
2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0
Microsoft .NET Framework=4.6.2, =4.7, =4.7.1, =4.7.2
4.7.4144.0
Microsoft .NET Framework=4.6.2, =4.7, =4.7.1, =4.7.2
4.7.4144.0
Microsoft .NET Framework=4.8
4.8.4805.0
Microsoft .NET Framework=4.8
4.8.4805.0
Microsoft .NET Framework=4.8
4.8.4805.0
Microsoft .NET Framework=3.5
2.0.50727.9183 & 3.0.30729.9169
Microsoft .NET Framework=4.8.1
4.8.9344.0
All of the following
Microsoft .NET Framework=3.5
Any of the following
Microsoft Windows 11 26h1
Microsoft Windows 11 26h1
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=4.6.2
Microsoft .NET Framework=4.7
Microsoft .NET Framework=4.7.1
Microsoft .NET Framework=4.7.2
Any of the following
Microsoft Windows 10 1607
Microsoft Windows 10 1607
Microsoft Windows Server 2016
All of the following
Any of the following
Microsoft .NET Framework=3.5
Microsoft .NET Framework=4.7.2
Any of the following
Microsoft Windows 10 1809
Microsoft Windows 10 1809
Microsoft Windows 10 1809
Microsoft Windows Server 2019
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
Any of the following
Microsoft Windows 10 1809
Microsoft Windows 10 1809
Microsoft Windows 10 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows Server 2019
Microsoft Windows Server 2022
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 21h2
Microsoft Windows 10 21h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows 10 22h2
Microsoft Windows 11 23h2
Microsoft Windows 11 23h2
Microsoft Windows 11 24h2
Microsoft Windows 11 24h2
Microsoft Windows 11 25h2
Microsoft Windows 11 25h2
Microsoft Windows Server 2022
Microsoft Windows Server 2025
All of the following
Microsoft .NET Framework=4.8
Any of the following
Microsoft Windows 10 1607
Microsoft Windows 10 1607
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016
All of the following
Microsoft .NET Framework=4.8.1
Any of the following
Microsoft Windows 11 26h1
Microsoft Windows 11 26h1

Remediation

Patch Available

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65810

Event History

Aug 11, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·05:07 PM
Data Sourced
via MITRE·05:07 PM
DescriptionSeverity
Data Sourced
via NVD·05:19 PM
RemedyDescriptionSeverityWeaknessAffected 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-2026-65810?

CVE-2026-65810 has a high severity rating of 7.8.

2

How do I fix CVE-2026-65810?

To fix CVE-2026-65810, apply the available patch from Microsoft for the .NET Framework.

3

What type of vulnerability is CVE-2026-65810?

CVE-2026-65810 is a path traversal vulnerability that allows for elevation of privilege.

4

Who is affected by CVE-2026-65810?

Users of Microsoft .NET Framework are potentially affected by CVE-2026-65810.

5

What is the potential impact of CVE-2026-65810?

The potential impact of CVE-2026-65810 allows unauthorized attackers to elevate privileges locally.

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