CVE-2026-70074: Windows DNS Information Disclosure Vulnerability
Out-of-bounds read in Windows DNS allows an authorized attacker to disclose information locally.
Other sources
Windows DNS Information Disclosure 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 6.3.9600.23470Patch KB5126836 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655 - 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 6.2.9200.26434Patch KB5126835 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9612Patch KB5126868 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9376Patch KB5126651
Event History
Frequently Asked Questions
Which Windows products are listed as affected?
The affected software list includes Windows 10; Windows Server 2012, 2012 R2, 2016, 2019, 2022, and 2025; and Microsoft Windows DNS Server.
Does exploitation require remote access or prior access to the system?
The vulnerability is rated with local attack vector and low privileges required. An attacker must be authorized and able to act locally on the affected system; no user interaction is required.