CVE-2026-70167: Windows Domain Name Service Remote Code Execution Vulnerability
Access of resource using incompatible type ('type confusion') in DNS Server allows an authorized attacker to execute code over a network.
Other sources
Windows Domain Name Service Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655
Event History
Frequently Asked Questions
Which systems are exposed to this issue?
The affected software listed is Microsoft Windows Server 2025 and Microsoft Windows Server 2022. Exposure applies to systems running the DNS Server component.
What does an attacker need to exploit it?
The attacker must be authorized and can exploit the vulnerability over the network. No user interaction is required.
What is the potential impact of successful exploitation?
A successful attacker can execute code on the affected DNS Server. The supplied severity vector indicates high impact to confidentiality, integrity, and availability.