https://www.theregister.co.uk/2018/06/14/cisco_microsoft_differ_on_seriousness_of_cve_2018_8210/

Cisco's Talos security limb has announced a new Microsoft Windows vulnerability and appears to have gone public because it feels Microsoft isn't taking things seriously.

Microsoft's aware of the vulnerability, but yesterday, the date on this advisory, Redmond still described the bug as “not disclosed”.