CVE-2026-69989: Windows DNS Server Remote Code Execution Vulnerability
Use after free in DNS Server allows an unauthorized attacker to execute code over a network.
Other sources
Windows DNS Server 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 6.2.9200.26349Patch KB5123065 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.23397Patch KB5123066 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9512Patch KB5123099 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5622Patch KB5122882 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33438Patch KB5122871 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9245Patch KB5122876
Event History
Frequently Asked Questions
Which systems are exposed to this issue?
The affected software list includes Microsoft Windows 10 and Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025. Exposure is specifically tied to systems running the DNS Server component.
Does exploitation require credentials or user interaction?
No. The vector is network-based, with no privileges or user interaction required, so an unauthenticated attacker could attempt exploitation remotely.
How difficult is exploitation expected to be?
The attack complexity is rated high. Exploitation requires conditions beyond simply sending a network request, although the provided data does not identify those conditions.
What is the potential impact of a successful exploit?
A successful exploit could allow remote code execution and has high confidentiality, integrity, and availability impact ratings.