Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
References
| Link | Resource |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26177 | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
23 Apr 2026, 18:44
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:* cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:* cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:* cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:* cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:* cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:* cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:* cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:* cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:* cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:* cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:* cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:* cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:* cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:* |
|
| References | () https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26177 - Vendor Advisory | |
| First Time |
Microsoft windows 11 24h2
Microsoft windows 11 25h2 Microsoft windows Server 2022 Microsoft Microsoft windows Server 2016 Microsoft windows Server 2022 23h2 Microsoft windows 10 1607 Microsoft windows Server 2012 Microsoft windows 11 26h1 Microsoft windows 10 1809 Microsoft windows 10 21h2 Microsoft windows 11 23h2 Microsoft windows 10 22h2 Microsoft windows Server 2019 Microsoft windows Server 2025 |
14 Apr 2026, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-14 18:16
Updated : 2026-04-23 18:44
NVD link : CVE-2026-26177
Mitre link : CVE-2026-26177
CVE.ORG link : CVE-2026-26177
JSON object : View
Products Affected
microsoft
- windows_server_2025
- windows_10_1809
- windows_server_2012
- windows_10_22h2
- windows_server_2022_23h2
- windows_server_2019
- windows_server_2022
- windows_10_1607
- windows_11_26h1
- windows_11_24h2
- windows_server_2016
- windows_11_23h2
- windows_11_25h2
- windows_10_21h2
CWE
CWE-416
Use After Free