CVE-2026-65798: Windows DNS Elevation of Privilege Vulnerability
Published Aug 11, 2026
·Updated
Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.
Other sources
Windows DNS Elevation of Privilege Vulnerability
— Microsoft
Affected Software
54 affected componentsFixes available
Microsoft Windows 10=22H2
10.0.19045.7663
Microsoft Windows 10=22H2
10.0.19045.7663
Microsoft Windows 10=21H2
10.0.19044.7663
Microsoft Windows 10=21H2
10.0.19044.7663
Microsoft Windows Server 2022<10.0.20348.5499, <10.0.20348.5440
10.0.20348.549910.0.20348.5440
Microsoft Windows 10=21H2
10.0.19044.7663
Microsoft Windows Server 2022<10.0.20348.5499, <10.0.20348.5440
10.0.20348.549910.0.20348.5440
Microsoft Windows 10=1607
10.0.14393.9418
Microsoft Windows 11=26H1
10.0.28000.2704
Microsoft Windows Server 2016<10.0.14393.9418
10.0.14393.9418
Microsoft Windows Server 2016<10.0.14393.9418
10.0.14393.9418
Microsoft Windows 10=1607
10.0.14393.9418
Microsoft Windows 11=26H1
10.0.28000.2704
Microsoft Windows 11=23H2
10.0.22631.7517
Microsoft Windows Server 2025<10.0.26100.33296, <10.0.26100.33222
10.0.26100.3329610.0.26100.33222
Microsoft Windows 10=22H2
10.0.19045.7663
Microsoft Windows 11=23H2
10.0.22631.7517
Microsoft Windows Server 2025<10.0.26100.33296, <10.0.26100.33222
10.0.26100.3329610.0.26100.33222
Microsoft Windows Server 2012 R2<6.3.9600.23338
6.3.9600.23338
Microsoft Windows Server 2012 R2<6.3.9600.23338
6.3.9600.23338
Microsoft Windows Server 2012<6.2.9200.26280
6.2.9200.26280
Microsoft Windows Server 2012<6.2.9200.26280
6.2.9200.26280
Microsoft Windows 11=24H2
10.0.26100.916810.0.26200.9106
Microsoft Windows 11=24H2
10.0.26100.916810.0.26100.9106
Microsoft Windows 11=25H2
10.0.26200.916810.0.26200.9106
Microsoft Windows 11=25H2
10.0.26200.916810.0.26200.9106
Microsoft Windows Server 2019<10.0.17763.9121
10.0.17763.9121
Microsoft Windows 10=1809
10.0.17763.9121
Microsoft Windows Server 2019<10.0.17763.9121
10.0.17763.9121
Microsoft Windows 10=1809
10.0.17763.9121
Microsoft Windows 10 1607<10.0.14393.9418
Microsoft Windows 10 1607<10.0.14393.9418
Microsoft Windows 10 1809<10.0.17763.9121
Microsoft Windows 10 1809<10.0.17763.9121
Microsoft Windows 10 21h2<10.0.19044.7663
Microsoft Windows 10 21h2<10.0.19044.7663
Microsoft Windows 10 21h2<10.0.19044.7663
Microsoft Windows 10 22h2<10.0.19045.7663
Microsoft Windows 10 22h2<10.0.19045.7663
Microsoft Windows 10 22h2<10.0.19045.7663
Microsoft Windows 11 23h2<10.0.22631.7517
Microsoft Windows 11 23h2<10.0.22631.7517
Microsoft Windows 11 24h2<10.0.26100.9106
Microsoft Windows 11 24h2<10.0.26100.9106
Microsoft Windows 11 25h2<10.0.26200.9106
Microsoft Windows 11 25h2<10.0.26200.9106
Microsoft Windows 11 26h1<10.0.28000.2704
Microsoft Windows 11 26h1<10.0.28000.2704
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016<10.0.14393.9418
Microsoft Windows Server 2019<10.0.17763.9121
Microsoft Windows Server 2022<10.0.20348.5440
Microsoft Windows Server 2025<10.0.26100.33222
Remediation
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
Affected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·05:06 PM
Data Sourced
via MITRE·05:06 PM
DescriptionSeverity
Data Sourced
via NVD·05:18 PM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-65798?
The severity of CVE-2026-65798 is rated as medium with a score of 6.7.
2
How do I fix CVE-2026-65798?
To fix CVE-2026-65798, apply the latest security updates provided by Microsoft for your Windows operating system.
3
What type of vulnerability is CVE-2026-65798?
CVE-2026-65798 is an elevation of privilege vulnerability in Windows DNS.
4
Who is affected by CVE-2026-65798?
CVE-2026-65798 affects Microsoft Windows 10, Windows 11, and various versions of Windows Server.
5
What attack vector is used in CVE-2026-65798?
CVE-2026-65798 can be exploited locally by an authorized attacker to elevate their privileges.