# Microsoft Windows 11 vulnerabilities Source: https://junglewise.ai/threats/technologies/windows-11 Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 12 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/windows-11.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 494 vulnerabilities in Microsoft Windows 11: 0 in the last 7 days and 1 in the last 90 days, 17 of them critical and 8 exploited in the wild. The most recent, CVE-2026-116638, was published on 26 October 2026. 1 vulnerability in the last four weeks, up from none in the four before. ## Counts - Last 7 days: 0 - Last 30 days: 1 - Last 90 days: 1 - All time: 494 (17 critical, 8 exploited in the wild) ## About Microsoft Windows 11 Microsoft Windows 11 operating system for personal computers and devices. ## Latest Microsoft Windows 11 vulnerabilities - [CVE-2026-116638: Microsoft Windows Recovery Environment UEFI/BIOS password bypass](https://junglewise.ai/threats/cve-2026-116638-the-windows-recovery-environment-winre-in-windows-10-and-11-may) (info, published 26 Oct 2026) - [CVE-2026-68820: Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.](https://junglewise.ai/threats/cve-2026-68820-microsoft-windows-ancillary-function-driver-for-winsock-use-after) (critical, exploited in the wild, CVSS 7, published 11 Aug 2026) - [CVE-2026-58598: Microsoft Windows Backup Engine privilege escalation](https://junglewise.ai/threats/cve-2026-58598-microsoft-windows-backup-engine-privilege-escalation) (high, CVSS 7, published 16 Jul 2026) - [CVE-2026-58638: Microsoft Windows Boot Loader security feature bypass](https://junglewise.ai/threats/cve-2026-58638-microsoft-windows-boot-loader-security-feature-bypass) (medium, CVSS 6, published 14 Jul 2026) - [CVE-2026-58637: Microsoft Windows Client-Side Caching Service privilege escalation](https://junglewise.ai/threats/cve-2026-58637-microsoft-windows-client-side-caching-service-privilege) (high, CVSS 7, published 14 Jul 2026) - [CVE-2026-58634: Microsoft Windows Desktop Window Manager privilege escalation](https://junglewise.ai/threats/cve-2026-58634-microsoft-windows-desktop-window-manager-privilege-escalation) (high, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-58633: Microsoft Windows Desktop Window Manager use after free privilege escalation](https://junglewise.ai/threats/cve-2026-58633-microsoft-windows-desktop-window-manager-use-after-free-privilege) (high, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-58632: Microsoft Windows Win32K use after free privilege escalation](https://junglewise.ai/threats/cve-2026-58632-microsoft-windows-win32k-use-after-free-privilege-escalation) (high, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-58629: Microsoft Windows DirectX use after free privilege escalation](https://junglewise.ai/threats/cve-2026-58629-microsoft-windows-directx-use-after-free-privilege-escalation) (high, CVSS 7, published 14 Jul 2026) - [CVE-2026-58628: Microsoft Windows Wireless Networking privilege escalation](https://junglewise.ai/threats/cve-2026-58628-microsoft-windows-wireless-networking-privilege-escalation) (high, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-58626: Microsoft Windows Remote Desktop Services use after free](https://junglewise.ai/threats/cve-2026-58626-microsoft-windows-remote-desktop-services-use-after-free) (high, CVSS 8.8, published 14 Jul 2026) - [CVE-2026-58619: Microsoft Windows Sensor Data Service use after free privilege escalation](https://junglewise.ai/threats/cve-2026-58619-microsoft-windows-sensor-data-service-use-after-free-privilege) (high, CVSS 7, published 14 Jul 2026) - [CVE-2026-58613: Microsoft Windows Cloud Files Mini Filter Driver privilege escalation](https://junglewise.ai/threats/cve-2026-58613-microsoft-windows-cloud-files-mini-filter-driver-privilege) (high, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-58594: Microsoft Windows RDP integer overflow remote code execution](https://junglewise.ai/threats/cve-2026-58594-microsoft-windows-rdp-integer-overflow-remote-code-execution) (high, CVSS 8.8, published 14 Jul 2026) - [CVE-2026-58547: Microsoft Windows UPnP heap overflow in upnp.dll](https://junglewise.ai/threats/cve-2026-58547-microsoft-windows-upnp-heap-overflow-in-upnp-dll) (medium, CVSS 5.5, published 14 Jul 2026) - [CVE-2026-58546: Microsoft Windows RDP information disclosure via uninitialized resource](https://junglewise.ai/threats/cve-2026-58546-microsoft-windows-rdp-information-disclosure-via-uninitialized) (medium, CVSS 6.5, published 14 Jul 2026) - [CVE-2026-58545: Microsoft Windows Kernel security feature bypass](https://junglewise.ai/threats/cve-2026-58545-microsoft-windows-kernel-security-feature-bypass) (medium, CVSS 5.5, published 14 Jul 2026) - [CVE-2026-58544: Microsoft Windows Management Services use after free privilege escalation](https://junglewise.ai/threats/cve-2026-58544-microsoft-windows-management-services-use-after-free-privilege) (high, CVSS 7, published 14 Jul 2026) - [CVE-2026-58543: Microsoft Windows USB Print Driver privilege escalation](https://junglewise.ai/threats/cve-2026-58543-microsoft-windows-usb-print-driver-privilege-escalation) (medium, CVSS 6.3, published 14 Jul 2026) - [CVE-2026-58542: Microsoft Windows Media heap overflow code execution](https://junglewise.ai/threats/cve-2026-58542-microsoft-windows-media-heap-overflow-code-execution) (high, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-58541: Microsoft Windows DWM type confusion privilege escalation](https://junglewise.ai/threats/cve-2026-58541-microsoft-windows-dwm-type-confusion-privilege-escalation) (high, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-58540: Microsoft Windows Installer privilege escalation](https://junglewise.ai/threats/cve-2026-58540-microsoft-windows-installer-privilege-escalation) (high, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-58539: Microsoft Windows RDP out-of-bounds read information disclosure](https://junglewise.ai/threats/cve-2026-58539-microsoft-windows-rdp-out-of-bounds-read-information-disclosure) (medium, CVSS 6.5, published 14 Jul 2026) - [CVE-2026-58538: Microsoft Windows Bluetooth Service heap overflow privilege escalation](https://junglewise.ai/threats/cve-2026-58538-microsoft-windows-bluetooth-service-heap-overflow-privilege) (high, CVSS 7.8, published 14 Jul 2026) - [CVE-2026-58537: Microsoft Windows NAT Helper Components use after free privilege escalation](https://junglewise.ai/threats/cve-2026-58537-microsoft-windows-nat-helper-components-use-after-free-privilege) (high, CVSS 7.8, published 14 Jul 2026) ## Most severe Microsoft Windows 11 vulnerabilities - [CVE-2026-33824: Microsoft Windows double free in IKE Extension](https://junglewise.ai/threats/cve-2026-33824-microsoft-windows-double-free-in-ike-extension) (critical, exploited in the wild, CVSS 9.8, published 14 Apr 2026) - [CVE-2026-21513: Microsoft MSHTML Framework protection mechanism failure](https://junglewise.ai/threats/cve-2026-21513-microsoft-mshtml-framework-protection-mechanism-failure) (critical, exploited in the wild, CVSS 8.8, published 10 Feb 2026) - [CVE-2026-21519: Microsoft Windows type confusion in Desktop Window Manager](https://junglewise.ai/threats/cve-2026-21519-microsoft-windows-type-confusion-in-desktop-window-manager) (critical, exploited in the wild, CVSS 7.8, published 10 Feb 2026) - [CVE-2025-62221: Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.](https://junglewise.ai/threats/cve-2025-62221-microsoft-windows-use-after-free-in-cloud-files-mini-filter) (critical, exploited in the wild, CVSS 7.8, published 9 Dec 2025) - [CVE-2025-62215: Microsoft Windows Kernel race condition privilege escalation](https://junglewise.ai/threats/cve-2025-62215-microsoft-windows-kernel-race-condition-privilege-escalation) (critical, exploited in the wild, CVSS 7, published 12 Nov 2025) - [CVE-2026-68820: Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.](https://junglewise.ai/threats/cve-2026-68820-microsoft-windows-ancillary-function-driver-for-winsock-use-after) (critical, exploited in the wild, CVSS 7, published 11 Aug 2026) - [CVE-2026-21525: Microsoft Windows NULL pointer dereference in Remote Access Connection Manager](https://junglewise.ai/threats/cve-2026-21525-microsoft-windows-null-pointer-dereference-in-remote-access) (critical, exploited in the wild, CVSS 6.2, published 10 Feb 2026) - [CVE-2026-20805: Microsoft Windows Desktop Window Manager information disclosure](https://junglewise.ai/threats/cve-2026-20805-microsoft-windows-desktop-window-manager-information-disclosure) (critical, exploited in the wild, CVSS 5.5, published 13 Jan 2026) - [CVE-2026-57092: Microsoft Windows VMSwitch use after free privilege escalation](https://junglewise.ai/threats/cve-2026-57092-microsoft-windows-vmswitch-use-after-free-privilege-escalation) (critical, CVSS 9.9, published 14 Jul 2026) - [CVE-2025-53766: Microsoft Windows GDI+ heap overflow](https://junglewise.ai/threats/cve-2025-53766-microsoft-windows-gdi-heap-overflow) (critical, CVSS 9.8, published 12 Aug 2025) ## Vulnerabilities per week 1 vulnerability in the last four weeks, up from none in the four before. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 1 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other Microsoft technologies - [Microsoft Windows](https://junglewise.ai/threats/technologies/windows): 2,362 vulnerabilities - [Microsoft Windows 10](https://junglewise.ai/threats/technologies/windows-10): 589 vulnerabilities - [Microsoft Windows 11 24h2](https://junglewise.ai/threats/technologies/windows-11-24h2): 565 vulnerabilities - [Microsoft Windows 11 25h2](https://junglewise.ai/threats/technologies/windows-11-25h2): 534 vulnerabilities - [Microsoft Windows Server 2025](https://junglewise.ai/threats/technologies/windows-server-2025): 534 vulnerabilities - [Microsoft Windows Server 2022](https://junglewise.ai/threats/technologies/windows-server-2022): 528 vulnerabilities - [Microsoft Windows Server 2019](https://junglewise.ai/threats/technologies/windows-server-2019): 521 vulnerabilities - [Microsoft Windows Server 2012](https://junglewise.ai/threats/technologies/windows-server-2012): 517 vulnerabilities - [Microsoft Windows Server 2016](https://junglewise.ai/threats/technologies/windows-server-2016): 476 vulnerabilities - [Microsoft Windows 10 1809](https://junglewise.ai/threats/technologies/windows-10-1809): 380 vulnerabilities - [Microsoft Windows 10 21h2](https://junglewise.ai/threats/technologies/windows-10-21h2): 373 vulnerabilities - [Microsoft Windows 10 22h2](https://junglewise.ai/threats/technologies/windows-10-22h2): 372 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Microsoft Windows 11 vulnerabilities", https://junglewise.ai/threats/technologies/windows-11, 12 November 2026.