CVE-2026-54999: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1607
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an unauthorized attacker to execute code over an adjacent network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-54999) involves a race condition (CWE-362) in the Windows TCP/IP stack of Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization when concurrently accessing shared resources enables an attacker on an adjacent network to execute arbitrary code. The flaw is classified as high severity with a CVSS 3.1 base score of 8.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to remediate the issue.
Potential Impact
Successful exploitation allows an unauthorized attacker on an adjacent network to execute arbitrary code on the affected system, potentially leading to full compromise of confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the provided security update from the Microsoft Security Response Center to remediate this issue. No additional mitigations are specified by the vendor advisory.
CVE-2026-54999: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1607
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an unauthorized attacker to execute code over an adjacent network.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-54999) involves a race condition (CWE-362) in the Windows TCP/IP stack of Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization when concurrently accessing shared resources enables an attacker on an adjacent network to execute arbitrary code. The flaw is classified as high severity with a CVSS 3.1 base score of 8.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to remediate the issue.
Potential Impact
Successful exploitation allows an unauthorized attacker on an adjacent network to execute arbitrary code on the affected system, potentially leading to full compromise of confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the provided security update from the Microsoft Security Response Center to remediate this issue. No additional mitigations are specified by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-16T14:10:05.869Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54999","vendor":"Microsoft"}]
Threat ID: 6a566f7e68715ace43e6bc2b
Added to database: 07/14/2026, 17:18:54 UTC
Last enriched: 08/13/2026, 15:26:21 UTC
Last updated: 08/28/2026, 22:52:12 UTC
Views: 193
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