CVE-2021-26862
HighCVSS 7.0Exploitation Probability (EPSS)
Elevated risk66th percentile - higher than 66% of all known CVEs
Summary
Elevation of privilege vulnerability in Windows Installer. An attacker could exploit it to gain elevated privileges on the system.
Risk Assessment
Risk of privilege escalation and system takeover.
Recommendation
Install the latest Windows security updates.
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-2026-70347High
Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-70346High
Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-70345High
Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-70344High
Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-65774High
Heap-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-62768High
Stack-based buffer overflow in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-61938High
Use after free in Windows Installer allows an authorized attacker to elevate privileges locally.
- CVE-2026-61925High
Incorrect authorization in Windows Installer allows an authorized attacker to elevate privileges locally.
Original NVD description (English source)
Windows Installer Elevation of Privilege Vulnerability