CVE intelligence

CVE-2026-69405

Vulnerability intelligence

Published Sep 8, 2026Sources checked Oct 28, 2026

5.7MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-69405 and is rated Medium severity with a CVSS score of 5.7. 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: Sep 11, 2026

Vendor remediation details

Install KB5122876. Install KB5122882. Install KB5122871. Install KB5123099. Install KB5123065. Install KB5123066.

Vendor-listed releases

10.0.17763.9245
10.0.20348.5622
10.0.26100.33438
10.0.14393.9512
6.2.9200.26349
6.3.9600.23398

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-2026-69405?

Missing release of memory after effective lifetime in Windows DHCP Server allows an authorized attacker to deny service over an adjacent network.

Source: NVD