CVE-2025-21352: Internet Connection Sharing (ICS) Denial of Service Vulnerability
First published: Tue Feb 11 2025(Updated: )
Internet Connection Sharing (ICS) Denial of Service Vulnerability
Credit: secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server 2008 Itanium | ||
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows Server 2008 Itanium | ||
| Microsoft Windows Server 2008 Itanium | ||
| Microsoft Windows Server 2012 x64 | ||
| Microsoft Windows Server 2012 x64 | ||
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server 2008 Itanium | ||
| Microsoft Windows 11 | =22H2 | |
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows 11 | =23H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2025 | ||
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows Server 2019 | ||
| Microsoft Windows 11 | =22H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2022 23H2 | ||
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows 11 | =23H2 | |
| Microsoft Windows 11 | =24H2 | |
| Microsoft Windows 11 | =24H2 | |
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows 10 | =1809 | |
| Microsoft Windows 10 | =1607 | |
| Microsoft Windows Server 2025 | ||
| Microsoft Windows 10 | ||
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows 10 | =1607 | |
| Microsoft Windows Server 2016 | ||
| Microsoft Windows 10 | =1809 | |
| Microsoft Windows Server 2019 | ||
| Microsoft Windows 10 | =21H2 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-21352?
CVE-2025-21352 has been classified with a high severity rating due to its potential for denial of service.
How do I fix CVE-2025-21352?
To mitigate CVE-2025-21352, apply the relevant patches provided by Microsoft for your specific Windows Server version.
Which Microsoft products are affected by CVE-2025-21352?
CVE-2025-21352 affects multiple Microsoft products including Windows Server 2008, 2008 R2, 2012, and 2012 R2.
Can CVE-2025-21352 cause system crashes?
Yes, CVE-2025-21352 can exploit Internet Connection Sharing leading to potential system crashes and service interruptions.
Is there a particular environment that is more vulnerable to CVE-2025-21352?
The vulnerability primarily affects systems with Server Core installations of Microsoft Windows Server.
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/title
- agent/type
- collector/msrc-cve
- source/Microsoft
- agent/first-publish-date
- agent/description
- agent/software-canonical-lookup
- agent/softwarecombine
- collector/nvd-api
- source/NVD
- agent/last-modified-date
- agent/severity
- agent/weakness
- agent/author
- agent/source
- agent/event
- agent/tags
- collector/msrc
- vendor/microsoft
- canonical/microsoft windows server 2012 r2
- canonical/microsoft windows server 2008 itanium
- canonical/microsoft windows server 2008 r2
- canonical/microsoft windows server 2012 x64
- canonical/microsoft windows 11
- version/microsoft windows 11/22h2
- canonical/microsoft windows 10
- version/microsoft windows 10/21h2
- version/microsoft windows 11/23h2
- canonical/microsoft windows server 2022
- canonical/microsoft windows server 2025
- version/microsoft windows 10/22h2
- canonical/microsoft windows server 2019
- canonical/microsoft windows server 2016
- canonical/microsoft windows server 2022 23h2
- version/microsoft windows 11/24h2
- version/microsoft windows 10/1809
- version/microsoft windows 10/1607