AI Weekly Malaysia

A critical vulnerability dubbed 'Zoomsday' allowed anyone in a Zoom meeting to take over another participant's entire device. AI-assisted security research reportedly needed only 20 prompts to discover a working exploit potentially affecting hundreds of millions of Zoom users.

Why: If you run distributed teams or customer calls on Zoom, patch immediately and treat any unpatched client as a remote-code-execution risk. The 20-prompt discovery angle means AI tooling is materially lowering the cost of finding high-impact exploits in software your team already ships with—factor this into your security review cadence, not just your Zoom update schedule.

Rapid7 researchers disclosed an unauthenticated RCE chain in on-premises Microsoft SharePoint (CVE-2026-55040 CVSS 9.1 for identity bypass, CVE-2026-63520 CVSS 8.1 for RCE via unsafe .NET type instantiation in Business Connectivity Services), affecting SharePoint Server Subscription Edition, 2019, and 2016, plus Project Server 2013 SP1 and Office Web Apps 2013 SP1. A significant portion of the vulnerability research was performed by an AI agent. SharePoint Online is not affected, and the July update breaks the chain while the August fix build numbers are not yet public.

Why: If you run on-premises SharePoint, confirm the July update is installed immediately and watch for the August package—Rapid7 says the chain is fixed but Microsoft had not yet published the patched build numbers at disclosure time. For everyone else, the notable detail is that an AI agent materially contributed to finding a CVSS 9.1 exploit chain, which signals that AI-assisted security research is producing real, high-severity results rather than toy demos.