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MSRC compact vulnerability detail

CVE-2025-27727 · Windows Installer Elevation of Privilege Vulnerability

Improper link resolution before file access ('link following') in Windows Installer allows an authorized attacker to elevate privileges locally.

Severity
Important
Impact
Elevation of Privilege
CVSS
7.8 base · 6.8 temporal
Release
2025-04-08
Signals
Windows Installer Elevation of Privilege Exploited: No Publicly disclosed: No Exploitability: Exploitation More Likely
CWE
CWE-59: Improper Link Resolution Before File Access ('Link Following')
Patch Diff
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Resolved binary override
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Description
Improper link resolution before file access ('link following') in Windows Installer allows an authorized attacker to elevate privileges locally.
FAQ / Articles
Windows Installer Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Windows Installer allows an authorized attacker to elevate privileges locally.
FAQ
Are the updates for Windows 10 for x64-based Systems and Windows 10 for 32-bit Systems currently available? Yes. As of April 9, 2025, the security update (5055547) for Windows 10 for x64-based Systems and Windows 10 for 32-bit Systems are available. Customers running Windows 10 should ensure the update is installed to be protected from this vulnerability.
FAQ
What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.