CVE-2026-83752
HighCVSS 7.0Exploitation Probability (EPSS)
Low risk10th percentile - higher than 10% of all known CVEs
Summary
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally. Exploitation may enable obtaining higher privileges on the system.
Risk Assessment
An attacker with valid credentials can locally elevate privileges, potentially leading to system compromise. This poses a serious threat to workstations and servers with Windows Installer installed.
Recommendation
Immediately install the security updates provided by Microsoft for Windows Installer. Additionally, limit the number of accounts with local logon privileges.
Other vulnerabilities in Windows Installer
See all- CVE-2014-1814High
The vulnerability in Windows Installer allows local users to gain elevated privileges via a crafted application that invokes the repair feature for a different application.
- CVE-2024-38014HighActively exploited
Elevation of privilege vulnerability in Windows Installer. An attacker could exploit it to gain elevated privileges.
- CVE-2020-0683HighActively exploited
An elevation of privilege vulnerability exists in the Windows Installer when MSI packages process symbolic links, known as 'Windows Installer Elevation of Privilege Vulnerability'.
- CVE-2026-96308High
Use-after-free vulnerability in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-96307High
Use-after-free vulnerability in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-96305High
Use-after-free vulnerability in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-96302High
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-88124High
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-88080High
Use after free vulnerability in Windows Installer. An authorized attacker can elevate privileges locally.
- CVE-2026-88076High
Null pointer dereference vulnerability in Windows Installer. An authorized attacker can elevate privileges locally.
Original NVD description (English source)
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS