{"uuid": "1aca252f-77f0-4755-bb4c-779a5057ba33", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-50507", "type": "seen", "source": "https://infosec.exchange/users/wdormann/statuses/116722445783279734", "content": "Based on the Publicly disclosed: yes, we can make an educated guess that CVE-2026-50507 is for bitskrieg.  Because MSRC doesn't describe their updates in a way that uniquely identify them, educated guesses is the best we can do.  (There are three bitlocker bypasses that were fixed today)\nIf we take a bitskrieg-vulnerable machine and install today's updates, and then attempt to enter WinRE, we get an error:`A required file couldn't be accessed because your BitLocker key wasn't loaded correctly.\"  Perhaps I'm the only person on the planet who this will happen to, or possibly Microsoft didn't really test their fix for CVE-2026-50507 too well.  \ud83e\udd37\u200d\u2642\ufe0f\nWe can fix this problem manually in an elevated CMD prompt:\nreagentc /disablereagentc /enable\nThis will reconfigure WinRE to properly use bitlocker.\nAfter doing this, our once-vulnerable VM will now behave like other Windows systems that may not have been vulnerable to bitskrieg. That is, upon clicking Skip this drive when attempting to get a command prompt in WinRE, we get a message that Command Prompt is unavailable because the OS drive is locked..  From here, the only way to get the command prompt is via the Restart to launch button, which appears to bypass/ignore our attempts to configure the EMS serial port.", "creation_timestamp": "2026-06-09T22:13:08.706898Z"}