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this post was submitted on 15 Oct 2025
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Nope 0 days means
Zero-day vulnerability: A software flaw that attackers discover before the developer does.
Zero-day exploit: The method hackers use to take advantage of this unknown vulnerability.
Zero-day attack: An attack that uses a zero-day exploit to damage a system, steal data, or plant malware before a patch is available. This is a serious risk because no defenses are in place for this specific flaw yet.
The first is the most common one found in the press and is usually reported to the company so they can patch it, before press release.
But it would be weird to call something a "zero-day" if it wasn't being exploited. Like if I discover a vuln, it shouldn't be considered a zero-day, even if I report it, if I'm not exploiting it in the wild.
It was exploited. That's how they proved it worked. They just didn't exploit it to do anything nefarious.
Ahh TIL. Thanks for the clarification!
Maybe I was just missing pertinent information, but I thought a zero day was an attack that could be exploited in a very short time frame that has remained unpatched, I didn't realize there was a hierarchy to the different stages.