Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
CVE-2026-33835 is a local elevation-of-privilege vulnerability in the Windows Cloud Files Mini Filter Driver caused by a use-after-free condition. According to the provided Microsoft advisory context, the flaw exists in the Windows Cloud Files Mini Filter Driver and can be exploited by an authorized attacker with low privileges. Microsoft classifies the issue as CWE-416 and rates it Important with CVSS 3.1 7.8. No vulnerable function or code path is identified in the provided material.
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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 public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An important Windows Cloud Files Mini Filter Driver elevation of privilege vulnerability that Microsoft determined is more likely to be exploited.
A local elevation of privilege vulnerability in the Windows Cloud Files Mini Filter Driver caused by a use-after-free condition, allowing an authorized attacker to gain SYSTEM privileges.
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.