From URL: A malicious irc user could nuke any other irc user that uses bitchx, ircii or scrollz out of irc (crash their irc client) by connecting to the same irc network and sending a malicious CTCP UTC message. Solution: For ircii: Update to ircii-20210314 For bitchx and scrollz: none yet Please stabilize 20210314.
Actually, this is a duplicate. My bad. *** This bug has been marked as a duplicate of bug 776772 ***