CVE-2026-88129

Analyzed Analyzed - Analysis Complete

Out-of-Bounds Read in DNS Server

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Out-of-bounds read in DNS Server allows an authorized 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

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-88129

EUVD

EUVD-2026-100158

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-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is an out-of-bounds read flaw in the DNS Server component of Microsoft Windows Server. It allows an authorized attacker to cause a denial of service over a network by exploiting this memory access issue.

Impact Analysis

The impact includes potential network service disruptions. An attacker could exploit this to crash DNS services, leading to unavailable network resources or connectivity issues for users and systems relying on the affected server.

Compliance Impact

This vulnerability allows denial of service via an out-of-bounds read in the DNS Server, which could disrupt critical network services. Such disruptions may impact compliance with standards like GDPR (data processing availability) or HIPAA (system reliability for healthcare data) by causing service unavailability.

Mitigation Strategies

Apply the latest security updates from Microsoft for affected DNS Server versions to patch the out-of-bounds read vulnerability.

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