CVE-2026-69782: Windows DNS Server Remote Code Execution Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') 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 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 10.0.17763.9245Patch KB5122876 - 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 6.3.9600.23397Patch KB5123066
Event History
Frequently Asked Questions
Which systems are in scope?
The affected software list includes Microsoft Windows 10 and Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025. Exposure applies to systems using the Windows DNS Server component.
What does an attacker need to exploit this issue?
The attack can be conducted over a network and does not require prior privileges or user interaction. The attack complexity is rated high.
What is the potential impact of successful exploitation?
A successful attacker can execute code. The supplied severity vector rates confidentiality, integrity, and availability impact as high.