CVE-2026-50495

Analyzed Analyzed - Analysis Complete

Improper Access Control in Microsoft Windows DNS

Publication date: 2026-07-14

Last updated on: 2026-07-22

Assigner: Microsoft Corporation

Description

Improper access control in Microsoft Windows DNS allows an authorized attacker to perform tampering locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-14

Last Modified

2026-07-22

Generated

2026-08-03

AI Q&A

2026-07-15

EPSS Evaluated

2026-08-02

NVD

CVE-2026-50495

EUVD

EUVD-2026-44091

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_11_26h1	to 10.0.28000.2269 (exc)
microsoft	windows_10_1809	to 10.0.17763.9020 (exc)
microsoft	windows_10_1809	to 10.0.17763.9020 (exc)
microsoft	windows_server_2019	to 10.0.17763.9020 (exc)
microsoft	windows_server_2022	to 10.0.20348.5386 (exc)
microsoft	windows_server_2025	to 10.0.26100.33158 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2525 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8875 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8875 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7548 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7548 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7548 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7548 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7548 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7548 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8875 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8875 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This vulnerability is an improper access control issue in Microsoft Windows DNS. An authorized attacker can exploit it to perform tampering on the local system.

Detection Guidance

Detection requires checking for unauthorized modifications to DNS settings or configurations. Review DNS server logs for unusual activity and verify access controls on DNS-related files and services. Use commands like 'dnscmd /info' to inspect DNS server settings and 'sc query dns' to check DNS service status.

Impact Analysis

An attacker could modify DNS settings or data locally, potentially redirecting network traffic or disrupting services. This could lead to data interception or service unavailability.

Compliance Impact

This vulnerability may impact compliance by allowing unauthorized data tampering, which could violate integrity requirements in GDPR or HIPAA. Organizations must address it to maintain data protection standards.

Mitigation Strategies

Apply the latest security updates from Microsoft to address the improper access control in Windows DNS. Monitor Microsoft's update guide for patches and install them promptly.

Hi! I’m here to help you understand CVE-2026-50495. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70