CVE-2025-21331

Summary

CVE-2025-21331 is a newly disclosed Windows Installer elevation of privilege vulnerability. Attackers can exploit this flaw to gain administrative privileges on affected systems. The vulnerability resides in the way Windows Installer handles certain installation parameters. Successful exploitation requires user interaction, such as opening a specially crafted installation package. Microsoft has released a patch to address this issue, and it is strongly recommended that users install it as soon as possible to protect their systems. If left unpatched, this vulnerability could allow attackers to install unauthorized software, steal sensitive information, or carry out other malicious activities.

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