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NVD description
A vulnerability in B1 Free Archiver v1.5.86 allows files extracted from downloaded archives to bypass Windows Mark of the Web (MotW) protections. When an archive is downloaded from the internet and extracted using B1 Free Archiver, the software fails to propagate the 'Zone.Identifier' alternate data stream to the extracted files. As a result, these files can be executed without triggering Windows Defender SmartScreen warnings or security prompts, enabling untrusted code execution without standard security restrictions.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
CVE-2025-50328 B1 Free Archiver v1.5.86 Mark of the Web Bypass Enabling Untrusted Code Execution https://vulmon.com/vulnerabilitydetails?qid=CVE-2025-50328
Post summary
The tweet announces CVE-2025-50328, noting a Mark of the Web bypass that enables untrusted code execution, but provides no evidence of active exploitation, PoC, or patch information.