CVE-2025-55686: windows 10 21h2 before 10.0.19044.6456 (exclusive); +18 more affected products

Affected technology

windows 10 21h2 · before 10.0.19044.6456 (exclusive)
microsoft

windows 10 22h2 · before 10.0.19045.6456 (exclusive)
microsoft

windows 11 23h2 · before 10.0.22631.6060 (exclusive)
microsoft

windows 11 24h2 · before 10.0.26100.6899 (exclusive)
microsoft

windows 11 25h2 · before 10.0.26200.6899 (exclusive)
microsoft

windows server 2022 · before 10.0.20348.4294 (exclusive)
microsoft

windows server 2022 23h2 · before 10.0.25398.1913 (exclusive)
microsoft

windows server 2025 · before 10.0.26100.6899 (exclusive)
microsoft

Windows 10 Version 21H2 · 10.0.19044.0 to before 10.0.19044.6456
Microsoft

Windows 10 Version 22H2 · 10.0.19045.0 to before 10.0.19045.6456
Microsoft

Windows 11 version 22H2 · 10.0.22621.0 to before 10.0.22621.6060
Microsoft

Windows 11 version 22H3 · 10.0.22631.0 to before 10.0.22631.6060
Microsoft

Windows 11 Version 23H2 · 10.0.22631.0 to before 10.0.22631.6060
Microsoft

Windows 11 Version 24H2 · 10.0.26100.0 to before 10.0.26100.6899
Microsoft

Windows 11 Version 25H2 · 10.0.26200.0 to before 10.0.26200.6899
Microsoft

Windows Server 2022 · 10.0.20348.0 to before 10.0.20348.4294
Microsoft

Windows Server 2022, 23H2 Edition (Server Core installation) · 10.0.25398.0 to before 10.0.25398.1913
Microsoft

Windows Server 2025 · 10.0.26100.0 to before 10.0.26100.6899
Microsoft

Windows Server 2025 (Server Core installation) · 10.0.26100.0 to before 10.0.26100.6899
Microsoft

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Local · Low privileges required · No user interaction required

What an attacker can do

The source says use after free in Windows PrintWorkflowUserSvc allows an authorized attacker to elevate privileges locally. Vendor/CNA’s CVSS 3.1 assessment (base score 7.0/10) rates confidentiality, integrity and availability impact as high.