zero-day • William OGOU Cybersecurity Blog

img of Over $1M Awarded for 73 Zero-Days at Pwn2Own Dublin 2025

A recap of Pwn2Own Dublin 2025, where hackers earned over $1 million for 73 unique zero-day vulnerabilities, including a full compromise of the new Samsung Galaxy S25.

img of Critical Oracle WebLogic RCE (CVE-2025-61882): Your Immediate Action Plan

Oct 7, 2025 4 min read

vulnerability

Critical Oracle WebLogic RCE (CVE-2025-61882): Your Immediate Action Plan By William OGOU

A critical, unauthenticated RCE vulnerability (CVE-2025-61882) in Oracle WebLogic Server is being actively exploited. Here is your immediate action plan.

img of The Knock at the Door: Deconstructing the Clop Extortion Campaign

Oct 4, 2025 8 min read

cybersecurity

The Knock at the Door: Deconstructing the Clop Extortion Campaign By William OGOU

Clop extortion campaign targeting a new Oracle E-Business Suite zero-day. Understand the threat, the attack, and the immediate action plan you need.

img of Critical SharePoint Zero-Day Under Attack: Action Plan for CVE-2025-53770

Jul 24, 2025 6 min read

vulnerability

Critical SharePoint Zero-Day Under Attack: Action Plan for CVE-2025-53770 By William OGOU

Critical SharePoint RCE (CVE-2025-53770): What SecOps teams must do right now, from patching to hunting the 'ToolShell' campaign. Your immediate action plan.

img of Critical SharePoint RCE (CVE-2025-53770)

Jul 21, 2025 7 min read

vulnerability

Critical SharePoint RCE (CVE-2025-53770) By William OGOU

Critical, actively exploited zero-day RCE vulnerability in SharePoint Server (CVE-2025-53770). This is your guide to understanding, identifying, and mitigating the threat immediately.