Microsoft Cloud Files Bug Exposes Elevation Threat
A newly disclosed vulnerability in Microsoft’s Cloud Files Minifilter driver, tracked as CVE-2025-55680, poses a significant elevation-of-privilege risk to all supported versions of Windows. Researchers from Exodus Intelligence revealed technical details of the flaw, which stems from the cldflt.sys driver used in cloud file operations. The Microsoft Cloud Files bug enables attackers with local access to escalate privileges, potentially gaining system-level control.
The vulnerability highlights ongoing concerns around Windows kernel drivers and their security posture. The Microsoft Cloud Files bug joins a growing list of critical flaws, including CVE-2025-11371, CVE-2025-54253, CVE-2025-27915 and CVE-2023-32692, all of which raise the stakes for enterprise environments relying on Windows-based infrastructure.
Security teams are advised to monitor for updates and apply patches as they become available. This disclosure underscores the need for proactive vulnerability management across Microsoft’s ecosystem.
To view the full report and technical breakdown, read the official article: