Typo Trouble: Exploring the Telegram Python RCE Vulnerability

Telegram’s Windows application was recently updated to address a critical zero-day flaw that permitted the execution of Python scripts without triggering security alerts, due to a typo in processing certain file extensions.

This vulnerability first surfaced on online forums later proof of concept shared on the XSS forum. The issue centered around Python “.pyzw” files which, due to a typo let attackers to evaded Telegram’s security protocols and ran immediately upon user interaction, provided Python was present on the device. …

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