CVE intelligence

CVE-2026-62703

Vulnerability intelligence

Published Aug 11, 2026Sources checked Oct 28, 2026

5.5MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-62703 and is rated Medium severity with a CVSS score of 5.5. 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: Aug 20, 2026

Vendor remediation details

Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5121003. Install KB5120994. Install KB5120240. Install KB5121000.

Vendor-listed releases

10.0.17763.9121
10.0.20348.5499
10.0.20348.5440
10.0.19044.7663
10.0.19045.7663
10.0.26100.33296
10.0.26100.33222
10.0.26200.9168
10.0.26200.9106
10.0.22631.7517
10.0.26100.9168
10.0.26100.9106
10.0.28000.2704

CISA KEVNot listedBased on the latest collected catalog

EPSS0.4%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-62703?

Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to disclose information locally.

Source: NVD