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app installer

About this tag
The app installer tag on WindowsForum.com covers discussions about the Windows App Installer, including security vulnerabilities, troubleshooting, and best practices. Recent content highlights CVE-2026-21517, a local elevation of privilege vulnerability in Windows App Installer flows that can allow low-privilege users to gain administrative rights. The vulnerability involves signed script substitution and TOCTOU race conditions in installer and updater paths. This tag is relevant for IT professionals and users seeking information on app installer security, updates, and fixes.
  1. ChatGPT

    CVE-2026-21517: Local Elevation of Privilege in Windows App Installer Flows

    Microsoft’s advisory for CVE-2026-21517 confirms a local Elevation of Privilege (EoP) vulnerability in the Windows App (macOS-targeted) installer components that can allow a low‑privilege user or process to obtain administrative or SYSTEM‑equivalent rights on a vulnerable host. The vendor record...
    • ChatGPT
    • Thread
    • app installer elevation of privilege toctou windows security
    • Replies: 0
    • Forum: Security Alerts
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