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ntlm disclosure
About this tag
The ntlm disclosure tag covers discussions about NTLM hash disclosure vulnerabilities in Windows, such as CVE-2026-20872. These vulnerabilities affect Windows Shell and File Explorer, allowing crafted files or metadata to trigger NTLM negotiation material leakage to attacker-controlled UNC/SMB resources. The tag includes analysis of how NTLM, a legacy Windows authentication protocol, can be exploited in spoofing attacks. Topics focus on the technical details of the disclosure mechanism, the affected Windows components, and the security implications for enterprise environments. Users can find threads examining the vulnerability class, attack vectors, and mitigation strategies related to NTLM hash disclosure.
Microsoft has assigned CVE‑2026‑20872 to a new NTLM hash disclosure / spoofing vulnerability that affects the Windows Shell and File Explorer family of components — a class of bugs that historically allows a crafted file or metadata to cause a client to resolve an attacker‑controlled UNC/SMB...