The alleged vulnerability is unlikely to be used by an attacker. When reading the text, it looks more like a theoretical thing than anything with practical implications.
There is always a lot of fuss when "vulnerabilities" are discovered in Comodo. IMO this fuss is most likely caused by the competitors. They have worse things than this being discovered on their side, yet the press remains silent.

Still interested to see when Comodo folks will fix this.
EDIT: Seems
they already fixed it.