Privilege Elevation Vulnerability in Windows Installer by Microsoft
CVE-2026-27910

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1607
Windows 10 Version 1809
Windows 10 Version 21h2
Windows 10 Version 22h2
Vendor
CVE Published:
14 April 2026

What is CVE-2026-27910?

The Windows Installer has a vulnerability that stems from improper handling of insufficient permissions or privileges. This flaw can be exploited by an authorized attacker to gain elevated privileges on the affected system. By manipulating this vulnerability, attackers can execute unauthorized actions and potentially compromise system integrity. Users are advised to apply the necessary patches to mitigate the risk associated with this vulnerability.

Affected Version(s)

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.9060

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.8644

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.7184

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.