CVE-2026-103560

Analyzed Analyzed - Analysis Complete

Improper Authorization in DNS Server

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

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

CVSS Scores

EPSS Scores

Probability:
Percentile:

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-2026-103560

EUVD

EUVD-2026-100383

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 is an improper authorization issue in the DNS Server component. An authorized attacker with local access can exploit it to perform tampering with DNS data or responses.

Impact Analysis

An attacker could modify DNS responses to redirect users to malicious sites, intercept communications, or disrupt network services. This could lead to data theft, phishing attacks, or service outages.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the DNS Server authorization flaw. Monitor Microsoft's update guide for specific patches and install them promptly.

Hi! I’m here to help you understand CVE-2026-103560. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70