CVE-2026-69596
Windows Program Compatibility Assistant Service Elevation of Privilege Vulnerability
CVE-2026-69596 is fixed in 28 products on 1 platform, first by KB5126868, released October 13, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.0
Important
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0030
22nd percentile
<p>Use after free in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Windows 10 Version 1607 for 32-bit Systems | 14393.9612 | KB5126868 | Oct 13, 2026 |
| Windows 10 Version 1607 for x64-based Systems | 14393.9612 | KB5126868 | Oct 13, 2026 |
| Windows 10 Version 1809 for 32-bit Systems | 17763.9376 | KB5126651 | Oct 13, 2026 |
| Windows 10 Version 1809 for x64-based Systems | 17763.9376 | KB5126651 | Oct 13, 2026 |
| Windows 10 Version 21H2 for 32-bit Systems | KB5126657 | Oct 13, 2026 | |
| Windows 10 Version 21H2 for ARM64-based Systems | KB5126657 | Oct 13, 2026 | |
| Windows 10 Version 21H2 for x64-based Systems | KB5126657 | Oct 13, 2026 | |
| Windows 10 Version 22H2 for 32-bit Systems | KB5126657 | Oct 13, 2026 | |
| Windows 10 Version 22H2 for ARM64-based Systems | KB5126657 | Oct 13, 2026 | |
| Windows 10 Version 22H2 for x64-based Systems | KB5126657 | Oct 13, 2026 | |
| Windows 11 Version 23H2 for ARM64-based Systems | 22631.7652 | KB5126653 | Oct 13, 2026 |
| Windows 11 Version 23H2 for x64-based Systems | 22631.7652 | KB5126653 | Oct 13, 2026 |
| Windows 11 Version 24H2 for ARM64-based Systems | KB5127648 | Oct 13, 2026 | |
| Windows 11 Version 24H2 for x64-based Systems | KB5127648 | Oct 13, 2026 | |
| Windows 11 Version 25H2 for ARM64-based Systems | KB5127648 | Oct 13, 2026 | |
| Windows 11 Version 25H2 for x64-based Systems | KB5127648 | Oct 13, 2026 | |
| Windows 11 Version 26H1 for ARM64-based Systems | 28000.3231 | KB5127646 | Oct 13, 2026 |
| Windows 11 Version 26H2 for ARM64-based Systems | KB5127648 | Oct 13, 2026 | |
| Windows 11 Version 26H2 for x64-based Systems | KB5127648 | Oct 13, 2026 | |
| Windows 11 version 26H1 for x64-based Systems | 28000.3231 | KB5127646 | Oct 13, 2026 |
| Windows Server 2016 | 14393.9612 | KB5126868 | Oct 13, 2026 |
| Windows Server 2016 (Server Core installation) | 14393.9612 | KB5126868 | Oct 13, 2026 |
| Windows Server 2019 | 17763.9376 | KB5126651 | Oct 13, 2026 |
| Windows Server 2019 (Server Core installation) | 17763.9376 | KB5126651 | Oct 13, 2026 |
| Windows Server 2022 | 20348.5761 | KB5126655 | Oct 13, 2026 |
| Windows Server 2022 (Server Core installation) | 20348.5761 | KB5126655 | Oct 13, 2026 |
| Windows Server 2025 | 26100.33650 | KB5126646 | Oct 13, 2026 |
| Windows Server 2025 (Server Core installation) | 26100.33650 | KB5126646 | Oct 13, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.