CVE-2026-83779
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk23th percentile - higher than 23% of all known CVEs
Summary
A heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
Risk Assessment
An attacker with local access could exploit this to gain higher privileges, potentially resulting in full system compromise.
Recommendation
Apply Microsoft security updates for Windows Installer and restrict local access to trusted users.
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)
Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS