Weekly Cyber Security Newsletter– Claude Hacked 3 Companies, Cisco 0-Day, Word Copilot and VMware Flaw +20 Stories

AI systems moved from experimental risk to confirmed attacker, a Cisco firewall zero-day was actively exploited in the wild, and a critical VMware authentication bypass put enterprise virtualization infrastructure at risk. Below is a roundup of the week’s most significant vulnerabilities, breaches, and security research. Critical VMware Authentication Bypass Flaws Broadcom issued advisory VMSA-2026-0006 covering multiple high-impact flaws across vCenter, ESX, Workstation, Fusion, Cloud Foundation, and Telco Cloud platforms, with CVSSv3 scores ranging from 2.7 to 9.8. The most severe, CVE-2026-59309, is an authentication-bypass vulnerability in the VMware Directory Service that lets a network-adjacent attacker fully bypass...

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