NIST says critical vulnerability found in 7-Zip archiving software | AHA News
In early 2025, a critical security vulnerability known as was identified in the popular 7-Zip archiving software . This flaw, often referred to in technical circles as a "bypass," specifically targets the Mark of the Web (MoTW) —a security feature Windows uses to tag files downloaded from the internet to trigger protective measures like SmartScreen or blocking macros. The MoTW Bypass Mechanism Bypass.7z
The vulnerability allows attackers to create specially crafted .7z archives that, when extracted, strip the MoTW from the enclosed files. By doing so, a malicious file can be executed without the typical security warnings that Windows would otherwise provide. Security feature bypass. NIST says critical vulnerability found in 7-Zip archiving
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