Windows File Explorer Previews Vulnerable to NTLM Hash Leakage
Windows File Explorer previews can expose NTLM password hashes, putting security at risk.
The preview pane in Windows File Explorer can be abused to expose NTLM password hashes, which attackers can reuse or try to crack offline.
Microsoft has disabled previews for downloaded files in the most recent Windows update.
What is NTLM?
NT LAN Manager (NTLM) is a Microsoft authentication protocol for Windows accounts and services, largely replaced by Kerberos due to security weaknesses.
Staying Safe
Follow the guide to stay safe from NTLM hash leakage through File Explorer previews.
File Explorer previews can be exploited to execute NTLM requests, revealing local account or domain join password hashes.
Author's summary: NTLM hash leakage via File Explorer previews poses security risks.
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