CVE-2025-21254: 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 2025 | ||
| Microsoft Windows Server 2025 | ||
| Microsoft Windows Server 2022 23H2 | ||
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server 2019 | ||
| Windows 11 | =23H2 | |
| Windows 11 | =22H2 | |
| Windows 11 | =22H2 | |
| Windows 11 | =24H2 | |
| Windows 11 | =24H2 | |
| Windows 11 | =23H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2016 | ||
| Microsoft Windows 10 | <10.0.14393.7785 | |
| Microsoft Windows 10 | <10.0.14393.7785 | |
| Microsoft Windows 10 | <10.0.17763.6893 | |
| Microsoft Windows 10 | <10.0.17763.6893 | |
| Microsoft Windows 10 | <10.0.19044.5487 | |
| Microsoft Windows 10 | <10.0.19045.5487 | |
| Windows 11 | <10.0.22621.4890 | |
| Windows 11 | <10.0.22631.4890 | |
| Windows 11 | <10.0.26100.3194 | |
| Microsoft Windows Server 2016 | <10.0.14393.7785 | |
| Microsoft Windows Server 2019 | <10.0.17763.6893 | |
| Microsoft Windows Server 2022 | <10.0.20348.3207 | |
| Microsoft Windows Server 2022 | <10.0.25398.1425 | |
| Microsoft Windows Server 2025 | <10.0.26100.3194 | |
| Windows 10 | =1809 | |
| Windows 10 | =1809 | |
| Windows 10 | =22H2 | |
| Windows 10 | =22H2 | |
| Windows 10 | =22H2 | |
| Windows 10 | =1607 | |
| Windows 10 | =1607 | |
| Windows 10 | =21H2 | |
| Windows 10 | =21H2 | |
| Windows 10 | =21H2 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-21254?
CVE-2025-21254 is classified as a Denial of Service vulnerability affecting Internet Connection Sharing.
How do I fix CVE-2025-21254?
To fix CVE-2025-21254, apply the relevant security updates provided by Microsoft, such as KB5051974 or other applicable patches depending on your Windows version.
Which versions of Windows are affected by CVE-2025-21254?
CVE-2025-21254 affects multiple versions of Windows 10 and Windows 11, specifically version 22H2 and earlier, among others.
Can CVE-2025-21254 be exploited remotely?
Yes, CVE-2025-21254 can potentially be exploited remotely, leading to a Denial of Service condition.
What mitigation steps can be taken for CVE-2025-21254?
Mitigation steps for CVE-2025-21254 include applying security updates as soon as they are available and monitoring network traffic for unusual patterns.
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