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TI-2026-19571 Aliases CVE-2026-24285GHSA-qchc-wx5p-p7pg

Win32k Elevation of Privilege Vulnerability

Priority LOW 33CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.

Summary

Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00464 40th percentileScored 2026-11-07
Fix Fixed Microsoft: 13 updates

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft Office for Android16.0.1 to before 16.0.19822.2000016.0.19822.20000Patch availableCNA
MicrosoftWindows 10 Version 160710.0.14393.0 to before 10.0.14393.895710.0.14393.8957Patch availableCNA
MicrosoftWindows 10 Version 180910.0.17763.0 to before 10.0.17763.851110.0.17763.8511Patch availableCNA
MicrosoftWindows 10 Version 21H210.0.19044.0 to before 10.0.19044.705810.0.19044.7058Patch availableCNA
MicrosoftWindows 10 Version 22H210.0.19045.0 to before 10.0.19045.705810.0.19045.7058Patch availableCNA
MicrosoftWindows 11 version 22H310.0.22631.0 to before 10.0.22631.678310.0.22631.6783Patch availableCNA
MicrosoftWindows 11 Version 23H210.0.22631.0 to before 10.0.22631.678310.0.22631.6783Patch availableCNA
MicrosoftWindows 11 Version 24H210.0.26100.0 to before 10.0.26100.803710.0.26100.8037Patch availableCNA
MicrosoftWindows 11 Version 25H210.0.26200.0 to before 10.0.26200.803710.0.26200.8037Patch availableCNA
MicrosoftWindows Server 20126.2.9200.0 to before 6.2.9200.259736.2.9200.25973Patch availableCNA
MicrosoftWindows Server 2012 (Server Core installation)6.2.9200.0 to before 6.2.9200.259736.2.9200.25973Patch availableCNA
MicrosoftWindows Server 2012 R26.3.9600.0 to before 6.3.9600.230746.3.9600.23074Patch availableCNA
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0 to before 6.3.9600.230746.3.9600.23074Patch availableCNA
MicrosoftWindows Server 201610.0.14393.0 to before 10.0.14393.895710.0.14393.8957Patch availableCNA
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0 to before 10.0.14393.895710.0.14393.8957Patch availableCNA
MicrosoftWindows Server 201910.0.17763.0 to before 10.0.17763.851110.0.17763.8511Patch availableCNA
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 to before 10.0.17763.851110.0.17763.8511Patch availableCNA
MicrosoftWindows Server 202210.0.20348.0 to before 10.0.20348.489310.0.20348.4893Patch availableCNA
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)10.0.25398.0 to before 10.0.25398.220710.0.25398.2207Patch availableCNA
MicrosoftWindows Server 202510.0.26100.0 to before 10.0.26100.3252210.0.26100.32522Patch availableCNA
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 to before 10.0.26100.3252210.0.26100.32522Patch availableCNA
  • Microsoft Office for Android VendorMicrosoft Affected 16.0.1 to before 16.0.19822.20000 Fixed in 16.0.19822.20000 Patch available CNA
  • Windows 10 Version 1607 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.8957 Fixed in 10.0.14393.8957 Patch available CNA
  • Windows 10 Version 1809 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.8511 Fixed in 10.0.17763.8511 Patch available CNA
  • Windows 10 Version 21H2 VendorMicrosoft Affected 10.0.19044.0 to before 10.0.19044.7058 Fixed in 10.0.19044.7058 Patch available CNA
  • Windows 10 Version 22H2 VendorMicrosoft Affected 10.0.19045.0 to before 10.0.19045.7058 Fixed in 10.0.19045.7058 Patch available CNA
  • Windows 11 version 22H3 VendorMicrosoft Affected 10.0.22631.0 to before 10.0.22631.6783 Fixed in 10.0.22631.6783 Patch available CNA
  • Windows 11 Version 23H2 VendorMicrosoft Affected 10.0.22631.0 to before 10.0.22631.6783 Fixed in 10.0.22631.6783 Patch available CNA
  • Windows 11 Version 24H2 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.8037 Fixed in 10.0.26100.8037 Patch available CNA
  • Windows 11 Version 25H2 VendorMicrosoft Affected 10.0.26200.0 to before 10.0.26200.8037 Fixed in 10.0.26200.8037 Patch available CNA
  • Windows Server 2012 VendorMicrosoft Affected 6.2.9200.0 to before 6.2.9200.25973 Fixed in 6.2.9200.25973 Patch available CNA
  • Windows Server 2012 (Server Core installation) VendorMicrosoft Affected 6.2.9200.0 to before 6.2.9200.25973 Fixed in 6.2.9200.25973 Patch available CNA
  • Windows Server 2012 R2 VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.23074 Fixed in 6.3.9600.23074 Patch available CNA
  • Windows Server 2012 R2 (Server Core installation) VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.23074 Fixed in 6.3.9600.23074 Patch available CNA
  • Windows Server 2016 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.8957 Fixed in 10.0.14393.8957 Patch available CNA
  • Windows Server 2016 (Server Core installation) VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.8957 Fixed in 10.0.14393.8957 Patch available CNA
  • Windows Server 2019 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.8511 Fixed in 10.0.17763.8511 Patch available CNA
  • Windows Server 2019 (Server Core installation) VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.8511 Fixed in 10.0.17763.8511 Patch available CNA
  • Windows Server 2022 VendorMicrosoft Affected 10.0.20348.0 to before 10.0.20348.4893 Fixed in 10.0.20348.4893 Patch available CNA
  • Windows Server 2022, 23H2 Edition (Server Core installation) VendorMicrosoft Affected 10.0.25398.0 to before 10.0.25398.2207 Fixed in 10.0.25398.2207 Patch available CNA
  • Windows Server 2025 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.32522 Fixed in 10.0.26100.32522 Patch available CNA
  • Windows Server 2025 (Server Core installation) VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.32522 Fixed in 10.0.26100.32522 Patch available CNA

CPE configurations NVD · 24

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:android:*:*before 16.0.19822.20000VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*before 10.0.14393.8957VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*before 10.0.14393.8957VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*before 10.0.17763.8511VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*before 10.0.17763.8511VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*before 10.0.19044.7058VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*before 10.0.19044.7058VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*before 10.0.19044.7058VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*before 10.0.19045.7058VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*before 10.0.19045.7058VulnerableMicrosoft
  • cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:android:*:* Versions before 16.0.19822.20000 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* Versions before 10.0.14393.8957 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* Versions before 10.0.14393.8957 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* Versions before 10.0.17763.8511 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* Versions before 10.0.17763.8511 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:* Versions before 10.0.19044.7058 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:* Versions before 10.0.19044.7058 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:* Versions before 10.0.19044.7058 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:* Versions before 10.0.19045.7058 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:* Versions before 10.0.19045.7058 Vulnerable ·Microsoft
Show 14 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*before 10.0.19045.7058VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*before 10.0.22631.6783VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*before 10.0.22631.6783VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*before 10.0.26100.7979VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*before 10.0.26100.7979VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*before 10.0.26200.7979VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*before 10.0.26200.7979VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*r2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*before 10.0.14393.8957VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*before 10.0.17763.8511VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*before 10.0.20348.4830VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*before 10.0.25398.2207VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*before 10.0.26100.32463VulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:* Versions before 10.0.19045.7058 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:* Versions before 10.0.22631.6783 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:* Versions before 10.0.22631.6783 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:* Versions before 10.0.26100.7979 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:* Versions before 10.0.26100.7979 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:* Versions before 10.0.26200.7979 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:* Versions before 10.0.26200.7979 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* Versions r2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* Versions before 10.0.14393.8957 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* Versions before 10.0.17763.8511 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* Versions before 10.0.20348.4830 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* Versions before 10.0.25398.2207 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:* Versions before 10.0.26100.32463 Vulnerable ·Microsoft

Remediation

Microsoft 13 updates

  • KB5079473
    Security Update
    • Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.8037
    • Windows 11 Version 24H2 for x64-based Systems 10.0.26100.8037
    • Windows 11 Version 25H2 for ARM64-based Systems 10.0.26200.8037
    • Windows 11 Version 25H2 for x64-based Systems 10.0.26200.8037
  • KB5079420
    Security Hotpatch Update
    • Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.7979
    • Windows 11 Version 24H2 for x64-based Systems 10.0.26100.7979
    • Windows 11 Version 25H2 for ARM64-based Systems 10.0.26200.7979
    • Windows 11 Version 25H2 for x64-based Systems 10.0.26200.7979
  • KB5078938
    Security Update
    • Windows 10 Version 1607 for 32-bit Systems 10.0.14393.8957
    • Windows 10 Version 1607 for x64-based Systems 10.0.14393.8957
    • Windows Server 2016 10.0.14393.8957
    • Windows Server 2016 (Server Core installation) 10.0.14393.8957
Show 10 more Microsoft updates
  • KB5078885
    Security Update
    • Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.7058
    • Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.7058
    • Windows 10 Version 21H2 for x64-based Systems 10.0.19044.7058
    • Windows 10 Version 22H2 for 32-bit Systems 10.0.19045.7058
    • Windows 10 Version 22H2 for ARM64-based Systems 10.0.19045.7058
    • Windows 10 Version 22H2 for x64-based Systems 10.0.19045.7058
  • KB5078883
    Security Update
    • Windows 11 Version 23H2 for ARM64-based Systems 10.0.22631.6783
    • Windows 11 Version 23H2 for x64-based Systems 10.0.22631.6783
  • KB5078775
    Monthly Rollup
    • Windows Server 2012 6.2.9200.25973
    • Windows Server 2012 (Server Core installation) 6.2.9200.25973
  • KB5078774
    Monthly Rollup
    • Windows Server 2012 R2 6.3.9600.23074
    • Windows Server 2012 R2 (Server Core installation) 6.3.9600.23074
  • KB5078766
    Security Update
    • Windows Server 2022 10.0.20348.4893
    • Windows Server 2022 (Server Core installation) 10.0.20348.4893
  • KB5078752
    Security Update
    • Windows 10 Version 1809 for 32-bit Systems 10.0.17763.8511
    • Windows 10 Version 1809 for x64-based Systems 10.0.17763.8511
    • Windows Server 2019 10.0.17763.8511
    • Windows Server 2019 (Server Core installation) 10.0.17763.8511
  • KB5078740
    Security Update
    • Windows Server 2025 10.0.26100.32522
    • Windows Server 2025 (Server Core installation) 10.0.26100.32522
  • KB5078737
    Security Hotpatch Update
    • Windows Server 2022 10.0.20348.4830
    • Windows Server 2022 (Server Core installation) 10.0.20348.4830
  • KB5078736
    Security Hotpatch Update
    • Windows Server 2025 10.0.26100.32463
    • Windows Server 2025 (Server Core installation) 10.0.26100.32463
  • KB5078734
    Security Update
    • Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.2207

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
Microsoft Office for AndroidFixed 16.0.19822.20000 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-24285
  2. 2026-10-03 Alias added: GHSA-qchc-wx5p-p7pg

References

Patch 1

  • TI-2025-37796 GDI+ Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2025-23775 M365 Copilot Information Disclosure Vulnerability CVSS 3.1CRITICAL 9.3
  • TI-2025-33667 GDI+ Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2021-19684 Microsoft Office app Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.6
  • TI-2026-37251 Microsoft M365 Copilot Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.9
  • TI-2026-39054 M365 Copilot Information Disclosure Vulnerability CVSS 3.1CRITICAL 9.8
See all 54 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences