CVE-2025-21183

Summary

CVE-2025-21183 is a vulnerability affecting the Windows Resilient File System (ReFS) Deduplication Service. This issue grant elevated privileges to attackers, allowing them to gain unauthorized access and potentially execute malicious code with administrative rights. Attackers can exploit this vulnerability by sending specially crafted requests to the deduplication service, resulting in a privilege escalation. Microsoft has released a security update to address this vulnerability, and it is strongly recommended that users apply the patch as soon as possible to protect their systems. Failure to do so may result in significant data loss or unauthorized system access.

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