CVE-2026-70085

Analyzed Analyzed - Analysis Complete

Missing Authorization in DNS Server Allows Local Tampering

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Missing authorization in DNS Server allows an authorized attacker to perform tampering locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-70085

EUVD

EUVD-2026-99152

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_server_2012	r2
microsoft	windows_server_2012	*
microsoft	windows_server_2016	to 10.0.14393.9612 (exc)
microsoft	windows_server_2019	to 10.0.17763.9376 (exc)
microsoft	windows_server_2025	to 10.0.26100.33650 (exc)
microsoft	windows_server_2022	to 10.0.20348.5761 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-862	The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

This vulnerability involves a missing authorization check in a DNS Server component. An authorized attacker with local access can exploit this to tamper with DNS records or server behavior without proper validation.

Impact Analysis

An attacker could redirect network traffic, intercept communications, or disrupt services by modifying DNS responses. This could lead to data breaches, service outages, or unauthorized access to systems.

Compliance Impact

This vulnerability may violate compliance requirements that mandate secure DNS configurations and access controls, such as GDPR's data integrity principles or HIPAA's safeguards for protected health information.

Mitigation Strategies

Apply the latest security updates from Microsoft for affected Windows Server versions to address the missing authorization in DNS Server.

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