CVE-2025-55331
Windows PrintWorkflowUserSvc Elevation of Privilege Vulnerability
CVE-2025-55331 is fixed in 19 products on 1 platform, first by KB5066791, released October 14, 2025. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.0
Important
Exploitation
None reported
Exploitation Unlikely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0035
28th percentile
<p>Use after free in Windows PrintWorkflowUserSvc allows an authorized attacker to elevate privileges locally.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Windows 10 Version 21H2 for 32-bit Systems | KB5066791 | Oct 14, 2025 | |
| Windows 10 Version 21H2 for ARM64-based Systems | KB5066791 | Oct 14, 2025 | |
| Windows 10 Version 21H2 for x64-based Systems | KB5066791 | Oct 14, 2025 | |
| Windows 10 Version 22H2 for 32-bit Systems | KB5066791 | Oct 14, 2025 | |
| Windows 10 Version 22H2 for ARM64-based Systems | KB5066791 | Oct 14, 2025 | |
| Windows 10 Version 22H2 for x64-based Systems | KB5066791 | Oct 14, 2025 | |
| Windows 11 Version 22H2 for ARM64-based Systems | KB5066793 | Oct 14, 2025 | |
| Windows 11 Version 22H2 for x64-based Systems | KB5066793 | Oct 14, 2025 | |
| Windows 11 Version 23H2 for ARM64-based Systems | KB5066793 | Oct 14, 2025 | |
| Windows 11 Version 23H2 for x64-based Systems | KB5066793 | Oct 14, 2025 | |
| Windows 11 Version 24H2 for ARM64-based Systems | KB5066835 | Oct 14, 2025 | |
| Windows 11 Version 24H2 for x64-based Systems | KB5066835 | Oct 14, 2025 | |
| Windows 11 Version 25H2 for ARM64-based Systems | KB5066835 | Oct 14, 2025 | |
| Windows 11 Version 25H2 for x64-based Systems | KB5066835 | Oct 14, 2025 | |
| Windows Server 2022 | 20348.4294 | KB5066782 | Oct 14, 2025 |
| Windows Server 2022 (Server Core installation) | 20348.4294 | KB5066782 | Oct 14, 2025 |
| Windows Server 2022, 23H2 Edition (Server Core installation) | 25398.1913 | KB5066780 | Oct 14, 2025 |
| Windows Server 2025 | KB5066835 | Oct 14, 2025 | |
| Windows Server 2025 (Server Core installation) | KB5066835 | Oct 14, 2025 | |
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