CVE intelligence

CVE-2026-42987

Vulnerability intelligence

Published Jun 9, 2026Sources checked Nov 12, 2026

8.1HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-42987 and is rated High severity with a CVSS score of 8.1. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Microsoft Security Response Center guidance

Vendor revision: Jun 9, 2026

Vendor remediation details

Install KB5094123. Install KB5094128. Install KB5094125. Install KB5094122. Install KB5094042. Install KB5094041.

Vendor-listed releases

10.0.17763.8880
10.0.20348.5256
10.0.26100.32995
10.0.14393.9234
6.2.9200.26132
6.3.9600.23228

CISA KEVNot listedBased on the latest collected catalog

EPSS0.6%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-42987?

Use after free in Windows Deployment Services allows an unauthorized attacker to execute code over a network.

Source: NVD