Author/Source: Zero-day means a flaw is new and the company didn’t know about it. Vulnerability is a weakness in the software. Remote code execution means a hacker can run their own code on your computer from somewhere else. See the full link here
Takeaway
This article is about a problem in Microsoft Office that hackers were using to get into people’s computers. Microsoft released a fix to close this security hole and protect users.
Technical Subject Understandability
Beginner
Analogy/Comparison
Think of it like a hole in the wall of your house that burglars could use to get in. Microsoft patched the hole to keep the burglars out.
Why It Matters
This flaw allowed hackers to take control of computers, potentially stealing personal information or causing damage. For example, a business could have its financial records stolen if a hacker exploited this flaw.
Related Terms
Zero-day, vulnerability, remote code execution
Tech Teacher 
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