Loading vulnerability…
CVE-2026-35418 is a local elevation-of-privilege vulnerability in the Windows Cloud Files Mini Filter Driver (cldflt.sys). The flaw is described as a use-after-free condition and is also associated with a time-of-check time-of-use race condition. It occurs in kernel space when one execution path continues using an object after another concurrent path has freed it, creating a dangling pointer condition in the driver. A locally authenticated attacker with low privileges can trigger the race and potentially reclaim the freed memory with controlled data, leading to arbitrary code execution in kernel context. Because the vulnerable component is a kernel-mode mini-filter driver used by Windows cloud file synchronization features, successful exploitation can result in escalation to SYSTEM.
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.
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.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A local privilege escalation vulnerability in the Windows Cloud Files Mini Filter Driver (cldflt.sys) caused by a TOCTOU race leading to a use-after-free, allowing low-privileged authenticated users to gain SYSTEM privileges.
A local elevation of privilege vulnerability in the Windows Cloud Files Mini Filter Driver caused by a use-after-free condition and TOCTOU race condition, allowing an authorized attacker to gain SYSTEM privileges.
Another elevation of privilege vulnerability in the Windows Cloud Files Mini Filter Driver mentioned as part of the same May 2026 patch cluster.
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.