An elevation of privilege vulnerability exists when ActiveX Installer service may allow access to files without proper authentication, aka 'Microsoft ActiveX Installer Service Elevation of Privilege Vulnerability'.
Severity
CVSS 3.1
5.5 medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS
1.2% chance of exploitation in the next 30 days; higher than 69% of CVEs (scores of 2026-10-31)