Service interruption via crafted network packets
Published Feb 11, 2025 · Updated Feb 13, 2026
Denial of service in Microsoft Windows Internet Connection Sharing allows adjacent remote attackers to interrupt the service with crafted packets. Microsoft identifies uncontrolled resource consumption but has not disclosed the packet field, parsing locus, or resource exhausted. Exploitation requires adjacent-network access and needs neither authentication nor user interaction; the reported consequence is availability loss only.
Summary
What happened
Denial of service in Microsoft Windows Internet Connection Sharing allows adjacent remote attackers to interrupt the service with crafted packets. Microsoft identifies uncontrolled resource consumption but has not disclosed the packet field, parsing locus, or resource exhausted. Exploitation requires adjacent-network access and needs neither authentication nor user interaction; the reported consequence is availability loss only.
The record
- CVE
- CVE-2025-21352
- Published
- Feb 11, 2025
- Updated
- Feb 13, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-400, T1499
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 11, 2025CVE publishedPublication date reported by the CVE source.
- Feb 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.10240.0 <10.0.10240.20915
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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