CVE intelligence

CVE-2026-62721

Vulnerability intelligence

Published Aug 11, 2026Sources checked Oct 28, 2026

7.8HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-62721 and is rated High severity with a CVSS score of 7.8. 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: Sep 14, 2026

Vendor remediation details

Install KB5120238. Install KB5120242. Install KB5120229. Install KB5120249. Install KB5120233. Install KB5120228. Install KB5129195. Install KB5129241. Install KB5120240. Install KB5129194. Install KB5120418. Install KB5120386. Install KB5120385.

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
10.0.26200.9457
10.0.26200.9448
10.0.22631.7517
10.0.26100.9457
10.0.26100.9448
10.0.28000.2956
10.0.14393.9418
6.2.9200.26280
6.3.9600.23338

CISA KEVNot listedBased on the latest collected catalog

EPSS0.3%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-62721?

Insufficient granularity of access control in User-Mode Power Service (UMPS) allows an authorized attacker to elevate privileges locally.

Source: NVD