Technology · Microsoft
Microsoft Windows 11 vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 493 vulnerabilities in Microsoft Windows 11: 0 in the last 7 days and 368 in the last 90 days, 17 of them critical and 8 exploited in the wild. The most recent, CVE-2026-68820, was published on 11 August 2026.
- Last 7 days
- 0
- Last 90 days
- 368
- Critical, all time
- 17
- Exploited in the wild
- 8
About Microsoft Windows 11
Windows 11 is a major release of the Windows NT operating system developed by Microsoft.
Latest Microsoft Windows 11 vulnerabilities
- CVE-2026-68820: Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.criticalexploited in the wildCVSS 7EPSS 0.3%
- CVE-2026-58598: Microsoft Windows Backup Engine privilege escalationhighCVSS 7
- CVE-2026-58638: Microsoft Windows Boot Loader security feature bypassmediumCVSS 6
- CVE-2026-58637: Microsoft Windows Client-Side Caching Service privilege escalationhighCVSS 7
- CVE-2026-58634: Microsoft Windows Desktop Window Manager privilege escalationhighCVSS 7.8
- CVE-2026-58633: Microsoft Windows Desktop Window Manager use after free privilege escalationhighCVSS 7.8
- CVE-2026-58632: Microsoft Windows Win32K use after free privilege escalationhighCVSS 7.8
- CVE-2026-58629: Microsoft Windows DirectX use after free privilege escalationhighCVSS 7
- CVE-2026-58628: Microsoft Windows Wireless Networking privilege escalationhighCVSS 7.8
- CVE-2026-58626: Microsoft Windows Remote Desktop Services use after freehighCVSS 8.8
- CVE-2026-58619: Microsoft Windows Sensor Data Service use after free privilege escalationhighCVSS 7
- CVE-2026-58613: Microsoft Windows Cloud Files Mini Filter Driver privilege escalationhighCVSS 7.8
- CVE-2026-58594: Microsoft Windows RDP integer overflow remote code executionhighCVSS 8.8
- CVE-2026-58547: Microsoft Windows UPnP heap overflow in upnp.dllmediumCVSS 5.5
- CVE-2026-58546: Microsoft Windows RDP information disclosure via uninitialized resourcemediumCVSS 6.5
- CVE-2026-58545: Microsoft Windows Kernel security feature bypassmediumCVSS 5.5
- CVE-2026-58544: Microsoft Windows Management Services use after free privilege escalationhighCVSS 7
- CVE-2026-58543: Microsoft Windows USB Print Driver privilege escalationmediumCVSS 6.3
- CVE-2026-58542: Microsoft Windows Media heap overflow code executionhighCVSS 7.8
- CVE-2026-58541: Microsoft Windows DWM type confusion privilege escalationhighCVSS 7.8
- CVE-2026-58540: Microsoft Windows Installer privilege escalationhighCVSS 7.8
- CVE-2026-58539: Microsoft Windows RDP out-of-bounds read information disclosuremediumCVSS 6.5
- CVE-2026-58538: Microsoft Windows Bluetooth Service heap overflow privilege escalationhighCVSS 7.8
- CVE-2026-58537: Microsoft Windows NAT Helper Components use after free privilege escalationhighCVSS 7.8
- CVE-2026-58536: Microsoft Windows Cloud Files Mini Filter Driver use after freehighCVSS 7.8
Most severe Microsoft Windows 11 vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-33824: Microsoft Windows double free in IKE Extensioncriticalexploited in the wildCVSS 9.8EPSS 1.6%
- CVE-2026-21513: Microsoft MSHTML Framework protection mechanism failurecriticalexploited in the wildCVSS 8.8EPSS 31.0%
- CVE-2026-21519: Microsoft Windows type confusion in Desktop Window Managercriticalexploited in the wildCVSS 7.8EPSS 4.5%
- CVE-2025-62221: Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.criticalexploited in the wildCVSS 7.8EPSS 2.5%
- CVE-2025-62215: Microsoft Windows Kernel race condition privilege escalationcriticalexploited in the wildCVSS 7EPSS 2.4%
- CVE-2026-68820: Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.criticalexploited in the wildCVSS 7EPSS 0.3%
- CVE-2026-21525: Microsoft Windows NULL pointer dereference in Remote Access Connection Managercriticalexploited in the wildCVSS 6.2EPSS 9.4%
- CVE-2026-20805: Microsoft Windows Desktop Window Manager information disclosurecriticalexploited in the wildCVSS 5.5EPSS 5.0%
- CVE-2026-57092: Microsoft Windows VMSwitch use after free privilege escalationcriticalCVSS 9.9
- CVE-2025-53766: Microsoft Windows GDI+ heap overflowcriticalCVSS 9.8EPSS 2.6%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 367 | 8 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 1 | 1 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/windows-11.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Microsoft Windows 11 vulnerabilities", https://junglewise.ai/threats/technologies/windows-11, 26 September 2026.