CVE intelligence

CVE-2026-44815

Vulnerability intelligence

Published Jun 9, 2026Sources checked Nov 12, 2026

8.8HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-44815 and is rated High severity with a CVSS score of 8.8. 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: Nov 10, 2026

Vendor remediation details

What can customers do to mitigate this vulnerability? Customers can reduce exposure by keeping the DHCP Client service enabled while avoiding use of the DhcpGetOriginalSubnetMask API. In this scenario, a malicious DHCP server may provide crafted data, but the data is not used unless that API is called. To help reduce exposure, customers can: Keep the DHCP Client service enabled so systems can cont Install KB5094123. Install KB5094128. Install KB5094127. Install KB5094125. Install KB5094126. Install KB5093998. Install KB5095051. Install KB5094122. Install KB5094042. Install KB5094041.

Vendor-listed releases

10.0.17763.8880
10.0.20348.5256
10.0.19044.7417
10.0.19045.7417
10.0.26100.32995
10.0.26200.8655
10.0.22631.7219
10.0.26100.8655
10.0.28000.2269
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-2026-44815?

Stack-based buffer overflow in Windows DHCP Client allows an unauthorized attacker to elevate privileges over an adjacent network.

Source: NVD