Elevation of Privilege Vulnerability in Windows Installer by Microsoft
CVE-2026-96073

7HIGH

Key Information:

Vendor

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

What is CVE-2026-96073?

A vulnerability exists in Windows Installer that allows authorized attackers to exploit a use after free condition. This flaw can lead to privilege escalation, enabling attackers to gain higher system access than permitted. Users are advised to apply the latest security patches to mitigate risks associated with this vulnerability.

Affected Version(s)

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.9612

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.9376

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.7807

References

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

CVSS V3.1

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.