Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.
References
| Link | Resource |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20926 | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
16 Jan 2026, 14:40
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Microsoft windows Server 2012
Microsoft windows Server 2019 Microsoft windows Server 2022 23h2 Microsoft windows Server 2016 Microsoft windows 11 24h2 Microsoft windows 11 25h2 Microsoft windows 10 22h2 Microsoft Microsoft windows 10 21h2 Microsoft windows 10 1809 Microsoft windows Server 2025 Microsoft windows Server 2022 Microsoft windows 11 23h2 Microsoft windows 10 1607 |
|
| References | () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20926 - Vendor Advisory | |
| CPE | cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* |
13 Jan 2026, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-01-13 18:16
Updated : 2026-01-16 14:40
NVD link : CVE-2026-20926
Mitre link : CVE-2026-20926
CVE.ORG link : CVE-2026-20926
JSON object : View
Products Affected
microsoft
- windows_server_2019
- windows_server_2012
- windows_10_1809
- windows_11_24h2
- windows_11_25h2
- windows_11_23h2
- windows_server_2016
- windows_server_2022
- windows_server_2022_23h2
- windows_server_2025
- windows_10_22h2
- windows_10_21h2
- windows_10_1607
CWE
CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')