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2025-12-09
Windows Cloud Files Mini Filter Driver Use-After-Free Local Privilege Escalation Vulnerability (CVE-2025-62221) Urgent Security Advisory
[Affected Scope] Windows operating systems utilizing the Windows Cloud Files Mini Filter Driver (cldflt.sys)
[Impact] Local authorized attackers can corrupt kernel memory to elevate privileges to SYSTEM and execute arbitrary code
[Mitigation] Immediately apply the official Microsoft security updates and monitor mini-filter driver activities