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CVE-2025-55680 is a local elevation of privilege vulnerability in the Windows Cloud Files Mini Filter Driver caused by a time-of-check time-of-use (TOCTOU) race condition. An authenticated attacker can exploit a timing flaw in the driver by winning a race between validation and subsequent use of a resource or state, resulting in improper handling within a privileged kernel component. Microsoft assessed the issue as more likely to be exploited. Public reporting also indicates that a proof-of-concept exploit was released after disclosure.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An elevation of privilege vulnerability in the Windows Cloud Files Mini Filter Driver for which a proof-of-concept (PoC) exploit has been released.
An elevation-of-privilege vulnerability in the Windows Cloud Files Mini Filter Driver requiring a race condition win by a local authenticated attacker to obtain SYSTEM privileges.
One of 11 important vulnerabilities considered more likely to be exploited, ranging from remote code execution to privilege escalation across desktop and cloud environments.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.