CVE intelligence

CVE-2025-21330

Vulnerability intelligence

Published Jan 14, 2025Sources checked Oct 6, 2026

7.5HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2025-21330 and is rated High severity with a CVSS score of 7.5. 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: Jun 9, 2026

Vendor remediation details

Install KB5095051. Install KB5050008. Install KB5049983. Install KB5049981. Install KB5050021. Install KB5050009. Install KB5049984.

Vendor-listed releases

10.0.28000.2269
10.0.17763.6775
10.0.20348.3091
10.0.19044.5371
10.0.22621.4751
10.0.19045.5371
10.0.26100.2894
10.0.22631.4751
10.0.25398.1369

CISA KEVNot listedBased on the latest collected catalog

EPSS2.0%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2025-21330?

Windows Remote Desktop Services Denial of Service Vulnerability

Source: NVD