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CVE-2026-2636: Using ReadFile with Handle of Opened .blf Log File Produces an Unrecoverable State in CLFS.sys Causing a BSoD
By Ricardo Narvaja on Wed, 02/25/2026
IntroductionWhile researching the Common Log File System (CLFS) to analyze a published vulnerability, I achieved remote code execution (RCE). However, after modifying certain values in a proof of concept (PoC), I observed that it triggered a non‑exploitable blue screen of death (BSoD) on the target system. Consequently, I am reporting this issue. This document helps the reader understand the BSoD...