Zscaler Security Advisories
Security Advisory -
October 14, 2025
Zscaler protects against 5 new vulnerabilities for Windows
Zscaler, working with Microsoft through their MAPP program, has proactively deployed protection for the following 5 vulnerabilities included in the October 2025 Microsoft security bulletins. Zscaler will continue to monitor exploits associated with all vulnerabilities in the October release and deploy additional protections, as necessary.
CVE-2025-59194 – Windows Kernel Elevation of Privilege Vulnerability
Severity: Important
Subscriptions Required
- Advanced Cloud Sandbox
- Advanced Threat Protection
Affected Software
- Windows 11 Version 25H2 for ARM64-based Systems
- Windows 11 Version 25H2 for x64-based Systems
- Windows Server 2025
- Windows 11 Version 24H2 for x64-based Systems
- Windows 11 Version 24H2 for ARM64-based Systems
- Windows Server 2022, 23H2 Edition (Server Core installation)
- Windows 11 Version 23H2 for x64-based Systems
- Windows 11 Version 23H2 for ARM64-based Systems
- Windows Server 2025 (Server Core installation)
- Windows 11 Version 22H2 for x64-based Systems
- Windows 11 Version 22H2 for ARM64-based Systems
CVE-2025-58722 – Microsoft DWM Core Library Elevation of Privilege Vulnerability
Severity: Important
Subscriptions Required
- Advanced Threat Protection
- Advanced Cloud Sandbox
Affected Software
- Windows 10 Version 1809 for 32-bit Systems
- Windows 11 Version 25H2 for ARM64-based Systems
- Windows 11 Version 25H2 for x64-based Systems
- Windows Server 2016 (Server Core installation)
- Windows Server 2016
- Windows 10 Version 1607 for x64-based Systems
- Windows 10 Version 1607 for 32-bit Systems
- Windows Server 2025
- Windows 11 Version 24H2 for x64-based Systems
- Windows 11 Version 24H2 for ARM64-based Systems
- Windows Server 2022, 23H2 Edition (Server Core installation)
- Windows 11 Version 23H2 for x64-based Systems
- Windows 11 Version 23H2 for ARM64-based Systems
- Windows Server 2025 (Server Core installation)
- Windows 10 Version 22H2 for 32-bit Systems
- Windows 10 Version 22H2 for ARM64-based Systems
- Windows 10 Version 22H2 for x64-based Systems
- Windows 11 Version 22H2 for x64-based Systems
- Windows 11 Version 22H2 for ARM64-based Systems
- Windows 10 Version 21H2 for x64-based Systems
- Windows 10 Version 21H2 for ARM64-based Systems
- Windows 10 Version 21H2 for 32-bit Systems
- Windows Server 2022 (Server Core installation)
- Windows Server 2022
- Windows Server 2019 (Server Core installation)
- Windows Server 2019
- Windows 10 Version 1809 for x64-based Systems
CVE-2025-55693 – Windows Kernel Elevation of Privilege Vulnerability
Severity: Important
Subscriptions Required
- Advanced Cloud Sandbox
- Advanced Threat Protection
Affected Software
- Windows Server 2025
- Windows 11 Version 24H2 for x64-based Systems
- Windows 11 Version 24H2 for ARM64-based Systems
- Windows 11 Version 25H2 for x64-based Systems
- Windows 11 Version 25H2 for ARM64-based Systems
- Windows Server 2025 (Server Core installation)
CVE-2025-55692 – Windows Error Reporting Service Elevation of Privilege Vulnerability
Severity: Important
Subscriptions Required
- Advanced Cloud Sandbox
- Advanced Threat Protection
Affected Software
- Windows Server 2012 R2 (Server Core installation)
- Windows Server 2012 R2
- Windows Server 2016 (Server Core installation)
- Windows Server 2016
- Windows 10 Version 1607 for x64-based Systems
- Windows 10 Version 1607 for 32-bit Systems
- Windows 10 for x64-based Systems
- Windows 10 for 32-bit Systems
- Windows Server 2025
- Windows 11 Version 24H2 for x64-based Systems
- Windows 11 Version 24H2 for ARM64-based Systems
- Windows Server 2022, 23H2 Edition (Server Core installation)
- Windows 11 Version 23H2 for x64-based Systems
- Windows 11 Version 23H2 for ARM64-based Systems
- Windows Server 2025 (Server Core installation)
- Windows 10 Version 22H2 for 32-bit Systems
- Windows 10 Version 22H2 for ARM64-based Systems
- Windows 10 Version 22H2 for x64-based Systems
- Windows 11 Version 22H2 for x64-based Systems
- Windows 11 Version 22H2 for ARM64-based Systems
- Windows 10 Version 21H2 for x64-based Systems
- Windows 10 Version 21H2 for ARM64-based Systems
- Windows 10 Version 21H2 for 32-bit Systems
- Windows Server 2022 (Server Core installation)
- Windows Server 2022
- Windows Server 2019 (Server Core installation)
- Windows Server 2019
- Windows 10 Version 1809 for x64-based Systems
- Windows 10 Version 1809 for 32-bit Systems
- Windows 11 Version 25H2 for ARM64-based Systems
- Windows 11 Version 25H2 for x64-based Systems
CVE-2025-55680 – Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Severity: Important
Subscriptions Required
- Advanced Cloud Sandbox
- Advanced Threat Protection
Affected Software
- Windows Server 2025
- Windows 11 Version 24H2 for x64-based Systems
- Windows 11 Version 24H2 for ARM64-based Systems
- Windows Server 2022, 23H2 Edition (Server Core installation)
- Windows 11 Version 23H2 for x64-based Systems
- Windows 11 Version 23H2 for ARM64-based Systems
- Windows Server 2025 (Server Core installation)
- Windows 10 Version 22H2 for 32-bit Systems
- Windows 10 Version 22H2 for ARM64-based Systems
- Windows 10 Version 22H2 for x64-based Systems
- Windows 11 Version 22H2 for x64-based Systems
- Windows 11 Version 22H2 for ARM64-based Systems
- Windows 10 Version 21H2 for x64-based Systems
- Windows 10 Version 21H2 for ARM64-based Systems
- Windows 10 Version 21H2 for 32-bit Systems
- Windows Server 2022 (Server Core installation)
- Windows Server 2022
- Windows Server 2019 (Server Core installation)
- Windows Server 2019
- Windows 10 Version 1809 for x64-based Systems
- Windows 10 Version 1809 for 32-bit Systems
- Windows 11 Version 25H2 for ARM64-based Systems
- Windows 11 Version 25H2 for x64-based Systems