CVE-2025-24054 is a vulnerability that allows attackers to capture NTLMv2-SSP hashes from a victim's machine during authentication requests to an attacker-controlled SMB server. Active exploitation of this vulnerability has been observed since March 19, 2025, targeting government and private sectors in Poland and Romania. The attacks involve phishing emails that lead victims to download an archive file containing exploits designed to leak NTLMv2-SSP hashes. Microsoft has released patches for this vulnerability, but users on older, unsupported versions may need to consider micropatching.