CVE-2026-55120

This is a flaw in PowerPoint that can be abused by a “bad” document to break how the program manages memory. If that document is opened, it can let an attacker run malicious code on the computer. Think of it like a lock with a hidden weakness: the attack doesn’t need permission ahead of time beyond getting the file opened.

This matters if your business uses Microsoft Office/PowerPoint on Windows or macOS, including Microsoft 365 apps, Microsoft Office, Microsoft 365/Office for Mac, and the specific PowerPoint/Office versions listed in the affected set. The risk is tied to files being opened in the vulnerable PowerPoint; there’s no indication from the findings that this requires an existing account inside your business. Treat it as a realistic risk whenever staff handle emails or files from untrusted sources and open them in the affected PowerPoint versions.

Verdict: RED. PowerPoint remote code execution means a successful attack can take over a user’s computer, install malware, and expose business data. Even though there’s no confirmed dated real-world claim in the findings and no public exploit code listed, you should still patch immediately because the impact is high and the fix is available.