CVE-2025-50328

CVSS 7.3 HIGHEPSS 0.3%CWE-290

Vexday Risk Score

21Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 7.3EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

29 abr 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Produtos afetados

n/a · n/a

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Referências

https://b1.org/https://github.com/math69b/B1FREE/blob/main/B1%20Free%20Archiver%20version