How to fix CVE-2025-21225?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Is Memory Corruption affected by CVE-2025-21225?

CVE-2025-21225 presents moderate security risk rated CVSS 5.9. Exploitation could compromise the security of affected deployments. A patch is available and should be applied during regular vulnerability management.

CVE-2025-21225

MEDIUM

2025-01-14 [email protected]

5.9

CVSS 3.1

CVSS Vector

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:03 vuln.today

Patch Released

Mar 28, 2026 - 18:03 nvd

Patch available

CVE Published

Jan 14, 2025 - 18:15 nvd

MEDIUM 5.9

Description

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

Analysis

Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. This Access of Resource Using Incompatible Type (Type Confusion) vulnerability could allow attackers to execute arbitrary code by exploiting type confusion in the application.

Technical Context

This vulnerability is classified as Access of Resource Using Incompatible Type (Type Confusion) (CWE-843), which allows attackers to execute arbitrary code by exploiting type confusion in the application. Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability Affected products include: Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2022 23H2, Microsoft Windows Server 2025.

Affected Products

Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2022 23H2, Microsoft Windows Server 2025.

Remediation

A vendor patch is available. Apply the latest security update as soon as possible. Enforce strict type checking, use type-safe languages, validate object types before operations.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.3

CVSS: +30

POC: 0

CVE-2025-21225 vulnerability details – vuln.today

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CVE-2025-21225

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CVE-2025-21225

CVSS Vector

Lifecycle Timeline

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Description

Analysis

Technical Context

Affected Products

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External POC / Exploit Code