CVE-2025-21225

Name: CVE-2025-21225
Creator: NVD / NIST
Published: 2025-01-14T18:15:34.367+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 1.50%

Last modified Jun 17, 2026

CVE-2025-21225 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability. EPSS estimates a 1.50% chance of exploitation in the next 30 days.

Description

Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability

Metrics

CVSS 3.1

5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.50%

71.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-843

Affected Software

Vendor	Product	Versions
Microsoft	Windows Server 2016	< 10.0.14393.7699
Microsoft	Windows Server 2019	< 10.0.17763.6775
Microsoft	Windows Server 2022	< 10.0.20348.3091
Microsoft	Windows Server 2022 23h2	< 10.0.25398.1369
Microsoft	Windows Server 2025	< 10.0.26100.2894

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21225Patch, Vendor Advisory

Timeline

Published: Jan 14, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-21225?

Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability

How severe is CVE-2025-21225?

CVE-2025-21225 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 1.50% probability of exploitation in the next 30 days.

How do I fix CVE-2025-21225?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-21225?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST