Actively exploited vulnerability
A vulnerability for which there is reliable evidence that a malicious actor has exploited it in a product with digital elements. It is one of the two events Article 14 tells a manufacturer to report. A bug with no evidence of exploitation is not, by itself, this report.
The people who mark a case this way should write down the evidence. That note is what a later reader uses to see why the clock started.
Source: Article 3 and Article 14.

