Technology · Microsoft
Microsoft Windows 11 23h2 vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 40 vulnerabilities in Microsoft Windows 11 23h2: 0 in the last 7 days and 14 in the last 90 days, 7 of them critical and 6 exploited in the wild. The most recent, CVE-2026-68820, was published on 11 August 2026.
- Last 7 days
- 0
- Last 90 days
- 14
- Critical, all time
- 7
- Exploited in the wild
- 6
About Microsoft Windows 11 23h2
A specific version of the Windows 11 operating system released in late 2023.
Latest Microsoft Windows 11 23h2 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-2026-56173: Microsoft Windows WebView use after free privilege escalationhighCVSS 7
- CVE-2026-50471: Microsoft Windows NTFS heap overflowhighCVSS 7.8
- CVE-2026-58601: Microsoft Windows privilege escalation in VHD Miniport DriverhighCVSS 7.8
- CVE-2026-49172: Microsoft Windows FTP Service heap overflow remote code executioncriticalCVSS 9.8
- CVE-2026-48572: Microsoft Windows App Installer race condition privilege escalationhighCVSS 7
- CVE-2026-48571: Microsoft Windows App Installer use after free privilege escalationhighCVSS 7
- CVE-2026-44800: Microsoft Windows Push Notifications privilege escalationhighCVSS 7.8
- CVE-2026-42982: Microsoft Windows Secure Kernel Mode privilege escalationhighCVSS 7.8
- CVE-2026-40378: Microsoft Windows LSASS denial of service via excessive memory allocationhighCVSS 7.5
- CVE-2026-34348: Microsoft Windows Event Logging Service protection mechanism failuremediumCVSS 6.5
- CVE-2026-34346: Microsoft Windows Ancillary Function Driver for WinSock Information DisclosuremediumCVSS 5.5
- CVE-2026-34328: Microsoft Windows Audio Service information disclosuremediumCVSS 5.5
- CVE-2026-33842: Microsoft Windows File Explorer information disclosuremediumCVSS 5.5
- CVE-2026-33841: Microsoft Windows Kernel heap buffer overflow privilege escalationhighCVSS 7.8EPSS 0.3%
- CVE-2026-32152: Microsoft Windows Desktop Window Manager use after free privilege escalationhighCVSS 7.8EPSS 0.1%
- CVE-2026-20938: Microsoft Windows VBS Enclave untrusted pointer dereferencehighCVSS 7.8EPSS 0.5%
- CVE-2026-20935: Microsoft Windows VBS Enclave untrusted pointer dereferencemediumCVSS 6.2EPSS 0.4%
- CVE-2026-20920: Microsoft Windows Win32K use after free in ICOMPhighCVSS 7.8EPSS 0.5%
- CVE-2026-20876: Microsoft Windows VBS Enclave heap buffer overflowmediumCVSS 6.7EPSS 0.5%
- CVE-2026-20871: Microsoft Desktop Window Manager use after free privilege escalationhighCVSS 7.8EPSS 4.0%
- CVE-2026-20867: Microsoft Windows Management Services race condition privilege escalationhighCVSS 7.8EPSS 0.3%
- CVE-2026-20863: Microsoft Windows Win32K double free privilege escalation in ICOMPhighCVSS 7EPSS 0.4%
- CVE-2026-20862: Microsoft Windows Management Services information disclosuremediumCVSS 5.5EPSS 0.6%
- CVE-2026-20861: Microsoft Windows Management Services privilege escalationhighCVSS 7.8EPSS 0.3%
Most severe Microsoft Windows 11 23h2 vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2024-21412: Microsoft Windows Internet Shortcut Files Security Feature Bypass Vulnerabilitycriticalexploited in the wildCVSS 8.1
- CVE-2025-30400: Microsoft Windows DWM Core Library Use-After-Free Vulnerabilitycriticalexploited in the wildCVSS 7.8
- CVE-2025-21335: Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free Vulnerabilitycriticalexploited in the wildCVSS 7.8
- CVE-2025-21333: Microsoft Windows Hyper-V NT Kernel Integration VSP Heap-based Buffer Overflow Vulnerabilitycriticalexploited in the wildCVSS 7.8
- CVE-2024-38080: Microsoft Windows Hyper-V Privilege Escalation Vulnerabilitycriticalexploited in the wildCVSS 7.8
- 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-2026-49172: Microsoft Windows FTP Service heap overflow remote code executioncriticalCVSS 9.8
- CVE-2026-20871: Microsoft Desktop Window Manager use after free privilege escalationhighCVSS 7.8EPSS 4.0%
- CVE-2026-20811: Microsoft Windows Win32K type confusion privilege escalationhighCVSS 7.8EPSS 0.5%
- CVE-2026-20938: Microsoft Windows VBS Enclave untrusted pointer dereferencehighCVSS 7.8EPSS 0.5%
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 | 13 | 1 | |
| 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-11-23h2.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 23h2 vulnerabilities", https://junglewise.ai/threats/technologies/windows-11-23h2, 26 September 2026.