CVE-2026-70079

Analyzed Analyzed - Analysis Complete

Improper DNS Workflow Enforcement in Windows Leads to DoS

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Improper enforcement of behavioral workflow in Windows DNS allows an unauthorized attacker to deny service over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-10-13

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-15

EPSS Evaluated

2026-10-18

NVD

CVE-2026-70079

EUVD

EUVD-2026-99150

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_server_2012	r2
microsoft	windows_server_2012	*
microsoft	windows_10_1607	to 10.0.14393.9612 (exc)
microsoft	windows_10_1607	to 10.0.14393.9612 (exc)
microsoft	windows_10_1809	to 10.0.17763.9376 (exc)
microsoft	windows_10_1809	to 10.0.17763.9376 (exc)
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-841	The product supports a session in which more than one behavior must be performed by an actor, but it does not properly ensure that the actor performs the behaviors in the required sequence.

Attack-Flow Graph

Executive Summary

This vulnerability involves improper enforcement of behavioral workflow in Windows DNS. An unauthorized attacker can exploit this to deny service over a network, meaning they can disrupt normal operations for users or systems relying on DNS services.

Impact Analysis

If you use systems running affected Windows versions, this vulnerability could allow attackers to disrupt DNS services, leading to network outages or inability to access critical services. This may cause downtime for businesses or users dependent on DNS resolution.

Mitigation Strategies

Apply the latest security updates from Microsoft to address the improper enforcement of behavioral workflow in Windows DNS. Monitor network traffic for unusual DNS service disruptions.

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