Exploitation is a Dish Best Served Cold: Winter Vivern Uses Known Zimbra Vulnerability to Target Webmail Portals of NATO-Aligned Governments in Europe
released on 2023-03-30 @ 12:58:04 PM
Researchers has observed recent espionage-related activity by TA473, including yet to be reported instances of TA473 targeting US elected officials and staffers. TA473 has continuously leveraged an unpatched Zimbra vulnerability in publicly facing webmail portals that allows them to gain access to the email mailboxes of government entities in Europe.