[dontchooseanick]

See the reddit netsec thread [0] . There is evidence of attackers having the exploit since April 2021, thus the disclosure.

> Was it spotted being abused.

No, not at 2021-12-10 AFAIK, just spotted being spread.

[0] https://reddit.com/r/netsec/comments/rcwws9/rce_0day_exploit...