Class familyMicrosoft · Win32k
Microsoft Windows use-after-free flaws, 2015–2026
77 Win32k CVEs with CWE-416 weaknesses, 10 Jun 2015 to 13 Oct 2026. 17 are in CISA KEVThe US Cybersecurity and Infrastructure Security Agency’s list of Known Exploited Vulnerabilities. A CVE is added when CISA has evidence that attackers are using it..
CVEs by year
Published each year. Select a CVE to open it.Grouped by product and weakness type (CWE); not proven to share a root cause.
1 2015’15
2016’16
1 2017’17
2018’18
2019’19
2020’20
2 2021’21
2022’22
5 2023’23
7 2024’24
13 2025’25
48 2026’26
In CISA KEVNot in KEV
20151 CVE, 1 in KEV
20171 CVE, 1 in KEV
20212 CVEs, 2 in KEV
20235 CVEs, 2 in KEV
20247 CVEs, 2 in KEV
202513 CVEs, 8 in KEV
202648 CVEs, 1 in KEV
- CVE-2026-20842
- CVE-2026-21241
- CVE-2026-25178
- CVE-2026-26177
- CVE-2026-26182
- CVE-2026-27922
- CVE-2026-32073
- CVE-2026-33099
- CVE-2026-33100
- CVE-2026-33835
- CVE-2026-34337
- CVE-2026-35418
- CVE-2026-34335
- CVE-2026-42911
- CVE-2026-44809
- CVE-2026-45596
- CVE-2026-50312
- CVE-2026-57093
- CVE-2026-58536
- CVE-2026-58613
- CVE-2026-61348
- CVE-2026-68820
- CVE-2026-70307
- CVE-2026-69279
- CVE-2026-80093
- CVE-2026-102208
- CVE-2026-70067
- CVE-2026-70076
- CVE-2026-70144
- CVE-2026-70168
- CVE-2026-70176
- CVE-2026-70209
- CVE-2026-70236
- CVE-2026-70237
- CVE-2026-70249
- CVE-2026-70253
- CVE-2026-70271
- CVE-2026-70273
- CVE-2026-83696
- CVE-2026-83738
- CVE-2026-83756
- CVE-2026-83761
- CVE-2026-83901
- CVE-2026-85802
- CVE-2026-85804
- CVE-2026-88106
- CVE-2026-88107
- CVE-2026-96249
CVEs in this family
Table view of the years above| CVE | Published | Title | Linked from | Priority |
|---|---|---|---|---|
| CVE-2015-2360KEV | 10 Jun 2015 | Microsoft Win32k Privilege Escalation Vulnerability | Grouped by weakness | 67.4 |
| CVE-2017-0263KEV | 12 May 2017 | Microsoft Win32k Privilege Escalation Vulnerability | Grouped by weakness | 67.6 |
| CVE-2021-34486KEV | 12 Aug 2021 | Microsoft Windows Event Tracing Privilege Escalation Vulnerability | Grouped by weakness | 67.5 |
| CVE-2021-40449KEV | 13 Oct 2021 | Microsoft Windows Win32k Privilege Escalation Vulnerability | Grouped by weakness | 78.4 |
| CVE-2023-21674KEV | 10 Jan 2023 | Microsoft Windows Advanced Local Procedure Call (ALPC) Privilege Escalation Vulnerability | Grouped by weakness | 68.8 |
| CVE-2023-24914 | 11 Apr 2023 | Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 10.1 |
| CVE-2023-29336KEV | 9 May 2023 | Microsoft Win32K Privilege Escalation Vulnerability | Grouped by weakness | 68.2 |
| CVE-2023-36743 | 10 Oct 2023 | Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 23.4 |
| CVE-2023-36776 | 10 Oct 2023 | Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 21.4 |
| CVE-2024-20683 | 9 Jan 2024 | Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 23.7 |
| CVE-2024-26241 | 9 Apr 2024 | Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 16.3 |
| CVE-2024-30028 | 14 May 2024 | Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 16.2 |
| CVE-2024-30082 | 11 Jun 2024 | Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 19.4 |
| CVE-2024-38059 | 9 Jul 2024 | Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 23.4 |
| CVE-2024-38107KEV | 13 Aug 2024 | Microsoft Windows Power Dependency Coordinator Privilege Escalation Vulnerability | Grouped by weakness | 58.7 |
| CVE-2024-38193KEV | 13 Aug 2024 | Microsoft Windows Ancillary Function Driver for WinSock Privilege Escalation Vulnerability | Grouped by weakness | 68.1 |
| CVE-2025-21334KEV | 14 Jan 2025 | Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free Vulnerability | Grouped by weakness | 58.5 |
| CVE-2025-21335KEV | 14 Jan 2025 | Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free Vulnerability | Grouped by weakness | 58.0 |
| CVE-2025-24044 | 11 Mar 2025 | Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability | Grouped by weakness | 15.1 |
| CVE-2025-24983KEV | 11 Mar 2025 | Microsoft Windows Win32k Use-After-Free Vulnerability | Grouped by weakness | 58.8 |
| CVE-2025-29824KEV | 8 Apr 2025 | Microsoft Windows Common Log File System (CLFS) Driver Use-After-Free Vulnerability | Grouped by weakness | 77.9 |
| CVE-2025-30400KEV | 13 May 2025 | Microsoft Windows DWM Core Library Use-After-Free Vulnerability | Grouped by weakness | 59.4 |
| CVE-2025-32701KEV | 13 May 2025 | Microsoft Windows Common Log File System (CLFS) Driver Use-After-Free Vulnerability | Grouped by weakness | 58.0 |
| CVE-2025-32709KEV | 13 May 2025 | Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability | Grouped by weakness | 64.2 |
| CVE-2025-53137 | 12 Aug 2025 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 11.5 |
| CVE-2025-53147 | 12 Aug 2025 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 12.7 |
| CVE-2025-53718 | 12 Aug 2025 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 11.0 |
| CVE-2025-62213 | 11 Nov 2025 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 20.4 |
| CVE-2025-62221KEV | 9 Dec 2025 | Microsoft Windows Use After Free Vulnerability | Grouped by weakness | 70.4 |
| CVE-2026-20842 | 13 Jan 2026 | Microsoft DWM Core Library Elevation of Privilege Vulnerability | Grouped by weakness | 11.4 |
| CVE-2026-21241 | 10 Feb 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 22.0 |
| CVE-2026-25178 | 10 Mar 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 9.1 |
| CVE-2026-26177 | 14 Apr 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 7.0 |
| CVE-2026-26182 | 14 Apr 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 7.0 |
| CVE-2026-27922 | 14 Apr 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 7.0 |
| CVE-2026-32073 | 14 Apr 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 10.6 |
| CVE-2026-33099 | 14 Apr 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 6.4 |
| CVE-2026-33100 | 14 Apr 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 6.4 |
| CVE-2026-33835 | 12 May 2026 | Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability | Grouped by weakness | 21.8 |
| CVE-2026-34337 | 12 May 2026 | Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability | Grouped by weakness | 6.6 |
| CVE-2026-35418 | 12 May 2026 | Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability | Grouped by weakness | 7.5 |
| CVE-2026-34335 | 9 Jun 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 7.8 |
| CVE-2026-42911 | 9 Jun 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 7.8 |
| CVE-2026-44809 | 9 Jun 2026 | Windows Common Log File System Driver Elevation of Privilege Vulnerability | Grouped by weakness | 9.2 |
| CVE-2026-45596 | 9 Jun 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 6.4 |
| CVE-2026-50312 | 14 Jul 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 9.0 |
| CVE-2026-57093 | 14 Jul 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 9.0 |
| CVE-2026-58536 | 14 Jul 2026 | Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability | Grouped by weakness | 10.8 |
| CVE-2026-58613 | 14 Jul 2026 | Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability | Grouped by weakness | 11.8 |
| CVE-2026-61348 | 11 Aug 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 8.6 |
| CVE-2026-68820KEV | 11 Aug 2026 | Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability | Grouped by weakness | 76.9 |
| CVE-2026-70307 | 11 Aug 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 8.6 |
| CVE-2026-69279 | 8 Sep 2026 | Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability | Grouped by weakness | 8.6 |
| CVE-2026-80093 | 8 Sep 2026 | Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability | Grouped by weakness | 10.0 |
| CVE-2026-102208 | 13 Oct 2026 | Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability | Grouped by weakness | 9.2 |
| CVE-2026-70067 | 13 Oct 2026 | Windows Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 9.4 |
| CVE-2026-70076 | 13 Oct 2026 | Windows Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 10.1 |
| CVE-2026-70144 | 13 Oct 2026 | Windows Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 11.6 |
| CVE-2026-70168 | 13 Oct 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 9.4 |
| CVE-2026-70176 | 13 Oct 2026 | Windows Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 10.1 |
| CVE-2026-70209 | 13 Oct 2026 | Windows Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 9.4 |
| CVE-2026-70236 | 13 Oct 2026 | Windows Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 9.6 |
| CVE-2026-70237 | 13 Oct 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 9.9 |
| CVE-2026-70249 | 13 Oct 2026 | Windows Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 10.1 |
| CVE-2026-70253 | 13 Oct 2026 | Windows Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 10.1 |
| CVE-2026-70271 | 13 Oct 2026 | Windows Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 10.1 |
| CVE-2026-70273 | 13 Oct 2026 | Windows Win32k Elevation of Privilege Vulnerability | Grouped by weakness | 9.6 |
| CVE-2026-83696 | 13 Oct 2026 | Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability | Grouped by weakness | 9.1 |
| CVE-2026-83738 | 13 Oct 2026 | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability | Grouped by weakness | 9.2 |
| CVE-2026-83756 | 13 Oct 2026 | Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability | Grouped by weakness | 10.6 |
| CVE-2026-83761 | 13 Oct 2026 | Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability | Grouped by weakness | 12.8 |
| CVE-2026-83901 | 13 Oct 2026 | Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability | Grouped by weakness | 9.4 |
| CVE-2026-85802 | 13 Oct 2026 | Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability | Grouped by weakness | 8.5 |
| CVE-2026-85804 | 13 Oct 2026 | Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability | Grouped by weakness | 10.9 |
| CVE-2026-88106 | 13 Oct 2026 | Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability | Grouped by weakness | 6.9 |
| CVE-2026-88107 | 13 Oct 2026 | Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability | Grouped by weakness | 5.8 |
| CVE-2026-96249 | 13 Oct 2026 | Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability | Grouped by weakness | 11.3 |