CVE-2026-20848: 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 SMB Server allows an authorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability involves concurrent execution using a shared resource without proper synchronization in the Windows SMB Server on Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker can exploit this race condition to elevate privileges remotely over the network. The issue is tracked as CWE-362 and has been assigned CVE-2026-20848. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation allows an authorized attacker to elevate their privileges on the affected system remotely via the network. This can lead to full compromise of the affected Windows 10 Version 1607 system, impacting confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20848 to remediate this vulnerability.
CVE-2026-20848: 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 SMB Server allows an authorized attacker to elevate privileges over a network.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves concurrent execution using a shared resource without proper synchronization in the Windows SMB Server on Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker can exploit this race condition to elevate privileges remotely over the network. The issue is tracked as CWE-362 and has been assigned CVE-2026-20848. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation allows an authorized attacker to elevate their privileges on the affected system remotely via the network. This can lead to full compromise of the affected Windows 10 Version 1607 system, impacting confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20848 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.377Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20848","vendor":"Microsoft"}]
Threat ID: 69668ae0a60475309f9ae0ee
Added to database: 01/13/2026, 18:11:44 UTC
Last enriched: 07/30/2026, 23:45:44 UTC
Last updated: 09/10/2026, 19:36:52 UTC
Views: 171
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