CVE-2025-30394: Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability

Overview

Severity

Medium (CVSS 5.9)

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Category

Denial of Service

Exploit Status

Not Exploited

Exploitation Likelihood

Unlikely

Patch Tuesday

2025-May

Released

2025-05-13

Last Updated

2025-06-03

EPSS Score

0.85% (percentile: 74.9%)

Description

Sensitive data storage in improperly locked memory in Remote Desktop Gateway Service allows an unauthorized attacker to deny service over a network.

FAQ

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires an attacker to win a race condition.

Affected Products (13)

Windows

• Windows Server 2019
• Windows Server 2019 (Server Core installation)
• Windows Server 2022
• Windows Server 2022 (Server Core installation)
• Windows Server 2025 (Server Core installation)
• Windows Server 2022, 23H2 Edition (Server Core installation)
• Windows Server 2025
• Windows Server 2016
• Windows Server 2016 (Server Core installation)

ESU

• Windows Server 2012
• Windows Server 2012 (Server Core installation)
• Windows Server 2012 R2
• Windows Server 2012 R2 (Server Core installation)

Security Updates (9)

• 5058392
• 5058385
• 5058500
• 5058411
• 5058497
• 5058384
• 5058383
• 5058451
• 5058403

Acknowledgments

Anonymous, bee13oy with <a href="https://www.cyberkl.com/">Cyber Kunlun Lab</a>, ʌ!ɔ⊥ojv with Kunlun Lab, SmallerDragon, Anonymous working with Trend Zero Day Initiative

Revision History

• 2025-05-13: Information published.
• 2025-06-03: Updated acknowledgment. This is an informational change only.