⚡ Exploit-DB.ai HIGH
HIGH

CVE-2021-43883

Published: March 18, 2026 · Source: National Vulnerability Database (NVD)

⚡ AI Threat Assessment

Windows Installer zero-day EoP exploited before patch release. The InstallerFileTakeOver bypass technique works even on fully patched systems without this specific fix. Apply December 2021 patches. Monitor Windows Installer temp directory for unusual DLL activity.

📋 Official Description

Windows Installer Elevation of Privilege Vulnerability exploited as zero-day, allowing low privileged users to plant malicious DLLs and gain SYSTEM privileges.

Get Real-Time CVE Alerts

Supernova subscribers receive AI-triaged CVE alerts the moment they're published — before the PoC drops.

Start Supernova — $99/mo →