CVE-2026-42910

Analyzed Analyzed - Analysis Complete

Out-of-Bounds Write in Windows Hotpatch Monitoring Service

Publication date: 2026-06-09

Last updated on: 2026-06-11

Assigner: Microsoft Corporation

Description

Out-of-bounds write in Windows Hotpatch Monitoring Service allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-06-09

Last Modified

2026-06-11

Generated

2026-06-30

AI Q&A

2026-06-09

EPSS Evaluated

2026-06-28

NVD

CVE-2026-42910

EUVD

EUVD-2026-35576

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_11_24h2	to 10.0.26100.8655 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8655 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8655 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8655 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2269 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2269 (exc)
microsoft	windows_server_2025	to 10.0.26100.32995 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is an out-of-bounds write in the Windows Hotpatch Monitoring Service. It allows an authorized attacker to elevate their privileges locally on the affected system.

Impact Analysis

The impact of this vulnerability is an elevation of privilege, meaning an attacker who already has some level of access can gain higher privileges. This can lead to full control over the affected system, compromising confidentiality, integrity, and availability.

Mitigation Strategies

This vulnerability involves an out-of-bounds write in the Windows Hotpatch Monitoring Service that allows local privilege escalation.

To mitigate this vulnerability, it is recommended to apply the security updates provided by Microsoft as soon as they become available.

Ensure that only authorized users have local access to systems running the Windows Hotpatch Monitoring Service to reduce risk.

Hi! I’m here to help you understand CVE-2026-42910. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70