Sorry, just want to clarify.The CIA has made no statement, most likely because they don't see there being any conclusive evidence (and they are the leading source of foreign intel).
The agencies have all weighed in, they just aren't identified in the classified summary.
The FBI went and stated that yes, they were the ones who said likely with moderate confidence.
The DOE was identified in the reporting as the one that recently switched, but hasn't actually confirmed anything.
The CIA has been identified (but hasn't said anything) as one of the agencies that said "we don't have enough conclusive evidence" (The only options for the CIA are they don't have enough conclusive evidence or they believe it was zoonotic, since the other options are accounted for.) but they haven't confirmed that.
Right now, only the FBI has gone on the record identifying which analysis was theirs. The usual thing in these kinds of summary reports, from what I understand, is that the agencies don't identify who recommended what. (Although I suspect they strategically leak it to reporters without confirming it, which is why we think the CIA is in the "not enough info" group.)
No one should guess "they haven't said anything because" - they just usually don't say anything and the "we don't really know" is already included in the report.