CVE-2026-78445: Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability
Published Sep 8, 2026
·Updated
Use after free in Windows Services for NFS ONCRPC XDR Driver allows an unauthorized attacker to execute code over a network.
Other sources
Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability
— Microsoft
Affected Software
18 affected componentsFixes available
Microsoft Windows Server 2012<6.2.9200.26349
6.2.9200.26349
Microsoft Windows Server 2012 R2<6.3.9600.23397
6.3.9600.23397
Microsoft Windows Server 2012<6.2.9200.26349
6.2.9200.26349
Microsoft Windows Server 2022<10.0.20348.5622
10.0.20348.5622
Microsoft Windows Server 2016<10.0.14393.9512
10.0.14393.9512
Microsoft Windows Server 2012 R2<6.3.9600.23397
6.3.9600.23397
Microsoft Windows Server 2025<10.0.26100.33438
10.0.26100.33438
Microsoft Windows Server 2025<10.0.26100.33438
10.0.26100.33438
Microsoft Windows Server 2019<10.0.17763.9245
10.0.17763.9245
Microsoft Windows Server 2016<10.0.14393.9512
10.0.14393.9512
Microsoft Windows Server 2019<10.0.17763.9245
10.0.17763.9245
Microsoft Windows Server 2022<10.0.20348.5622
10.0.20348.5622
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016<10.0.14393.9512
Microsoft Windows Server 2019<10.0.17763.9245
Microsoft Windows Server 2022<10.0.20348.5622
Microsoft Windows Server 2025<10.0.26100.33438
Remediation
Event History
Sep 8, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·05:18 PM
Data Sourced
via MITRE·05:18 PM
DescriptionSeverity
Data Sourced
via NVD·06:20 PM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
Which Windows Server releases are listed as affected?
The listed affected products are Microsoft Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025.
2
What access does an attacker need to exploit this issue?
The CVSS vector indicates network access is sufficient, with low attack complexity. It requires no prior privileges and no user interaction.
3
What is the potential security impact if exploitation succeeds?
The vulnerability can allow remote code execution. The CVSS metrics indicate high potential impact to confidentiality, integrity, and availability.