Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
CVE-2025-62454 is a heap-based buffer overflow in the Windows Cloud Files Mini Filter Driver, associated with the cldflt.sys attack surface. The flaw affects the Windows Cloud Files Mini Filter Driver and allows a locally authorized attacker to trigger memory corruption via crafted file operations. Microsoft describes it as an elevation of privilege vulnerability and multiple supporting sources characterize it as enabling escalation to SYSTEM. It is rated Important with a CVSS v3 score of 7.8, and Microsoft assessed exploitation as more likely.
Are you exposed to this one?
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Affected products & vendors
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.
Recent activity
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A use-after-free vulnerability in the Windows Cloud Files Mini Filter Driver (cldflt.sys) that allows local privilege escalation to SYSTEM. Exploitation is considered more likely, and similar vulnerabilities in this component have been exploited in the past.
An elevation-of-privilege vulnerability in the Windows Cloud Files Mini Filter Driver (cldflt.sys) that allows local attackers to escalate privileges to SYSTEM. Exploitation is considered more likely due to low complexity.
Windows Cloud Files Mini Filter Driver local elevation of privilege vulnerability (noted as more likely to be exploited).
A local elevation of privilege vulnerability in the Windows Cloud Files Mini Filter Driver, considered more likely to be exploited.
The version that knows your environment.
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.