Weekly Cybersecurity Newsletter Bulletin – Cisco and Android 0-Day, BragJack Attack, Claude Opus 5 Used to Hack OpenAI, and 20+ Stories
Mon Sep 21 2026
AI & ML
Exploit
OS:Android
Threat Intel
Vulnerability
Wordpress
Zero-day
cybersecuritynews.com
This week’s roundup covers a maximum-severity Cisco ISE zero-day under active exploitation, an actively exploited Android modem flaw on Pixel devices, a browser-extension attack that hijacks AI agents across five browsers, and researchers using Claude Opus 5 to compromise OpenAI’s forum and reach its internal source code. Also inside: a WordPress one-click RCE chain, an […]
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