CVE-2025-21225
Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability
Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability
Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability
- Record
CVE-2025-21225- CVSS 3.1
- 5.9 Medium
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 - Weakness
- CWE-843
- Updated
- 2026-11-02
EUVDEUVD-2025-2292
Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability
- Record
EUVD-2025-2292- CVSS 3.1
- 5.9 Medium
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-qgf5-w7jw-p449
Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability
Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability
- Record
GHSA-qgf5-w7jw-p449- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-843
- Updated
- 2026-11-02
NVD
Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability
- Record
CVE-2025-21225- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-843
- Updated
- 2026-11-02
Affected products
- microsoft windows server 2016
- microsoft windows server 2016 (server core installation)
- microsoft windows server 2019
- microsoft windows server 2019 (server core installation)
- microsoft windows server 2022
- microsoft windows server 2022, 23h2 edition (server core installation)
- microsoft windows server 2025
- microsoft windows server 2025 (server core installation)
- microsoft windows server 2022 23h2
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-21225 is a medium vulnerability (CVSS 5.9) in Microsoft Windows Server 2016, published January 14, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.65%, the 76th percentile. No source names a fixed version.