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CVE-2025-32701 is a local elevation-of-privilege vulnerability in the Windows Common Log File System (CLFS) driver. The flaw is a use-after-free condition in kernel-mode CLFS object handling that can occur when the driver improperly manages memory references after freeing an internal log-related object. A local, authorized attacker can trigger the vulnerable state through crafted interaction with CLFS log operations and then reclaim the freed memory with controlled data, causing the kernel to dereference a stale pointer. Successful exploitation results in execution in kernel context and elevation to SYSTEM. Microsoft reported exploitation in the wild at the time of disclosure, and the vulnerability has been associated with post-compromise activity where attackers use it as a privilege-escalation primitive after obtaining initial access.
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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.
27 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Windows CLFS driver elevation of privilege vulnerability reported as exploited and included in CISA KEV.
An elevation of privilege vulnerability in the Windows Common Log File System Driver (CLFS) explicitly listed as under exploitation in the wild.
Elevation of privilege vulnerability in Windows Common Log File System (CLFS).
A use-after-free vulnerability in Windows CLFS, used for elevation of privilege in ransomware operations.
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.