CVE-2025-21311

Summary

CVE-2025-21311 is a newly discovered Windows vulnerability that enables an attacker to elevate privileges through NTLM Version 1 protocol. This issue can be exploited remotely, potentially allowing an unauthenticated attacker to gain administrative access to a targeted system. The vulnerability arises due to a flaw in the way Windows handles NTLM authentication requests. Successful exploitation can result in significant security implications, including data theft, unauthorized system access, and the installation of malware. Microsoft released a security update to mitigate this vulnerability, and it is strongly recommended that all Windows users apply the patch as soon as possible to protect their systems.

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